Robot vacuums / Compare

Dreame D30 Ultra vs Roborock Saros 20

A

Product A: Dreame

D30 Ultra

63 of 89 known

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B

Product B: Roborock

Saros 20

73 of 89 known

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All 89 fields

Every value links to where we found it.

Only differences

ADreame D30 Ultra

BRoborock Saros 20

General

6 of 7 differ

Series

D Series2Maker product pagedreametech.com/products/d30-ultra-robot-vacuum.jsonRead 15 October 2026Store product tag D Series

Saros1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

010204AA001320, 010204AA0013232Maker product pagedreametech.com/products/d30-ultra-robot-vacuum.jsonRead 15 October 2026US store SKUs 010204AA001320 (black) and 010204AA001323 (white). The maker model code was not found on US pages. The EU manual and retailers name RTD31TE for the EU version, which is not stored here

RRE0CPS, RR-Saros205-M1, RRDE-Saros205-M1, S2052-001Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026US store SKU RR-Saros205-M1. RRE0CPS is the robot model in the manual. S2052-00 is a retailer part number4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026FCC statement page lists robot model RRE0CPS and Empty Wash Fill Dock EWFD42LRR10Retailer pagepood.datafox.ee/mobiilseadmed-ja-tarvikud/robottolmuimejad/vacuum-cleaner-robot-saros-20-black-s2052-00Read 14 October 2026Retailer lists MPN S2052-00 for Saros 20 black

GTIN / EAN

00850079600256, 008500796002492Maker product pagedreametech.com/products/d30-ultra-robot-vacuum.jsonRead 15 October 2026Variant barcodes in the store feed. Black 00850079600256, white 00850079600249

0195043008363, 69369059053141Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026GTIN 0195043008363 is in the US page structured data

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

January 20269Press articlesmarthomeassistent.de/roborock-saros-20-kurz-vor-marktstartRead 14 October 2026Presented at CES in early January 2026 with a Q1 2026 market launch

Status

Available1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026US store page with Add to Cart and both colors listed at 539.99 dollars on 2026-10-15

Available9Press articlesmarthomeassistent.de/roborock-saros-20-kurz-vor-marktstartRead 14 October 2026Sold on the maker's US, German and other regional stores in October 2026

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Roborock Saros 10R11Reviewtechradar.com/home/robot-vacuums/the-outstanding-roborock-saros-10r-just-got-even-better-here-are-3-ways-the-saros-20-improves-on-its-predecessorRead 23 October 2026TechRadar calls the Roborock Saros 20 the successor to the Roborock Saros 10R.12Measurementrtings.com/robot-vacuum/tools/compare/roborock-saros-10r-vs-roborock-saros-20/88296/127216Read 23 October 2026RTINGS says the Roborock Saros 20 is the successor to the Roborock Saros 10R.

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$1,599.998Reviewtomsguide.com/home/home-appliances/roborock-saros-20-reviewRead 14 October 2026Review states a US MSRP of $1,599.99 on the Roborock website, US release 2026-03-23. Excludes tax

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€1,4998Reviewtomsguide.com/home/home-appliances/roborock-saros-20-reviewRead 14 October 2026Review states an EU MSRP of 1,499 euro and an early 2026 EU release. Also reported as UVP 1.499 euro by smarthomeassistent.de9Press articlesmarthomeassistent.de/roborock-saros-20-kurz-vor-marktstartRead 14 October 2026UVP 1,499 euro, launch offer 1,289 euro from 2026-02-26 to 2026-03-11 (article dated 2026-02-23)

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026US store

US, DE1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026

ColoursiThe maker's own colour names

Black, White1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026US store options Black and White

Black3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026German page color is Schwarz

Suction and brushes

7 of 13 differ

Max suction (claimed)iThe maker's highest suction pressure claim in pascals. Each maker measures it in its own lab, so figures from different brands are not directly comparable. A claim such as "175x more suction" is not converted. A maker can claim another figure in another market, such as Roborock in the US, so it is per variant.

25,000Pa1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Maximum Suction 25,000Pa. In-house lab data, actual performance may vary

36,000Pa1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026

Suction power (claimed)iThe maker's suction power claim in air watts. Few robot makers publish it. Pascals are a different measure and go in Max suction.

Not available

Not available

Main brushesiNumber of main brush rolls under the robot. One roll split into two halves counts as one, and so do two cones tip to tip on one axis. Two rolls that turn against each other count as two.

11Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Box list: one Main Brush (pre-installed). The spec table lists a TriCut Brush

17Reviewvacuumwars.com/roborock-saros-20-reviewRead 14 October 2026Review says the DuoDivide main brush has a gap in the center to channel hair. One roll split into two halves counts as one. The manual lists the halves as main brushes

Main brush materialiMaterial of the main brush rolls. Rubber covers rubber blades and fins.

Not available

Not available

Main brush (as published)iThe maker's name for the main brush, such as "DuoDivide Brush".

TriCut Brush1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: TriCut Brush. The page calls it the TriCut brush that detangles human hair and pet fur. The US box includes the TriCut brush. The UAE and UK pages say the TriCut brush is sold separately there

DuoDivide Brush2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Main brush liftiThe robot can raise its main brush off the floor, for example while it mops.

Not available

Yes1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 20262Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Side brushesiSpinning edge brushes. 0 for a robot without one.

11Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Box list: one Side Brush (pre-installed)

16Measurementvacuumwars.com/compare/robot-vacuums/roborock_saros_20Read 14 October 2026Compare page lists 1 side brush

Extending side brushiThe side brush or its arm swings outward to reach corners and wall edges. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

No3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK spec table: Extendable and liftable side brush no5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars hardware table: Extending Side Brush no

Yes2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Side brush liftiThe robot can raise its side brush off the floor.

Not available

Not available

Max carpet pile (claimed)iTallest carpet pile the maker says the robot can clean. It is not the threshold height the robot can climb. A carpet height the robot climbs onto or glides over, such as carpet climbing 3 cm, is not a pile height.

Not available

30mm1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Published as 1.18 in (the global page says 3 cm). Needs manual enabling in the app2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Dynamic carpet cleaning for pile up to 3 cm. Needs manual enabling in the app

Robot dustbiniDust capacity of the bin inside the robot. The base station's bag or bin is listed separately.

300mL1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Dust Box Capacity 300ml

259mL3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026Compare table shows 259 ml dust container

FilteriPublished filter type or grade, such as "E11 HEPA". The robot's own filter. A dock filter goes in the source note.

HEPA5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars hardware table: HEPA filter yes. The maker names no filter grade

Not available

Washable filteriThe maker says the filter can be rinsed with water.

Yes4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026Maintenance: rinse the dust box and its filter with clean water only and let them dry before reuse

Yes4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026Parts list names A6-6 Washable Filter

Navigation and obstacles

8 of 8 differ

NavigationiHow the robot maps the home. A turret is a raised laser sensor on top. A retractable turret sinks into the body to pass under furniture. Built-in lidar sits inside the body with no turret. A solid-state 3D ToF sensor without a turret counts as built-in lidar. Camera means visual mapping without lidar. Gyroscope only means the robot has no mapping sensor and cleans in rows with a gyroscope. Random bounce means the robot has no mapping sensor and no gyroscope and turns when it bumps into something.

Lidar turret1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: dynamic laser navigation with smart 3DAdapt obstacle avoidance. The robot is 97 mm high, so the laser sensor is fixed on top. Vacuum Wars calls it spinning lidar and the manual lists an LDS cover and a laser distance sensor

Built-in lidar or ToF sensor2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Maker names StarSight Autonomous System 2.0, a 3D ToF system. Vacuum Wars calls it embedded 3D ToF lidar and notes no top turret

Navigation system (as published)iThe maker's name, such as "VersaLift DToF" or "ClearView Pro LiDAR".

Smart Pathfinder Technology1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: Smart Pathfinder Technology

StarSight Autonomous System 2.02Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Obstacle sensors (as published)iThe maker's description of the front obstacle sensors, such as "AI Camera x2 + LED".

3DAdapt obstacle avoidance, single 3D line laser sensor1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: smart 3DAdapt obstacle avoidance using dynamic laser navigation. The manual names a 3D line laser sensor on the front. The page names no camera3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK spec table: Obstacle avoidance Single laser

StarSight Autonomous System 2.0 with 3D sensors and RGB camera, VertiBeam lateral obstacle avoidance2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Maker lists VertiBeam lateral obstacle avoidance under StarSight 2.0. Advanced 3D sensors and an RGB camera per the US page

AI object recognitioniA camera and software identify objects such as cables, socks and pet waste and steer around them. A structured light sensor without a camera counts when the maker says it identifies object types, as Narwal does. A bump sensor or infrared sensor alone does not qualify. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

Not available

Yes1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026

Object types recognized (claimed)iNumber of object types the maker says the robot can identify. A figure such as 300+ is stored as 300.

Not available

3001Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Published as 300+ types

Dirt detectioniA sensor or camera finds dirtier spots and the robot cleans them harder or again. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

No3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK spec table: CleanGenius multi-spectrum dirt detection no. Vacuum Wars also lists no dirt sensor5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars hardware table: Dirt sensor no

Yes2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Max threshold (claimed)iHighest single step or door threshold the maker says the robot can climb.

20mm1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Threshold Crossing 0.79in (20mm). In-house lab data

45mm2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 20264.5 cm single threshold such as a door sill (maker FAQ on the German page, 1.77 in on the US page)

Max two-step threshold (claimed)iHighest total height of a two-step threshold the maker says the robot can climb, such as a stepped sliding door track. Makers set conditions, such as a minimum width of the lower step.

Not available

88mm1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Published as 3.46 in double layer (1.77 in + 1.69 in). Global page gives 8.8 cm. Test conditions: first step up to 4.5 cm, gap deeper than 12 cm and up to 14 cm, second step up to 4.3 cm2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 20268.8 cm double layer. First step up to 4.5 cm, gap deeper than 12 cm and up to 14 cm, second step up to 4.3 cm. Maker internal test

Mopping

5 of 8 differ

Mop typeiNone means the robot only vacuums. Spinning pads are round pads that rotate. A roller is a turning cylinder. A track is a belt-shaped mop that rolls over the floor. A vibrating pad moves back and forth. A static pad is dragged.

Spinning pads1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: two high-speed rotary mops (DuoScrub) with round mop pad holders

Spinning pads2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Extending mopiA mop pad or roller moves outward to reach wall edges and under low furniture. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

Yes1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: MopExtend RoboSwing yes. The page says the mop pads extend up to 1.57 in (4 cm), based on in-house calculation

Yes1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 20262Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Mop lift heightiHow far the robot raises its mop pads alone when it drives onto carpet, as the maker's spec table gives it. A lift with the raised chassis goes in the source note.

10.5mm1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Mop Lifting Height 0.41in (10.5mm). The footnote says this is the height difference of the robot before and after mop lifting, so the pads alone

Not available

Leaves mop at the dockiThe robot drops its mop pads at the base station by itself and picks them up again, so it can vacuum carpet without them.

No5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars mopping table: Drops Mop Pads at Station no. Raises Mop Pads on Carpet yes at 10.5 mm

Yes2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Mop downforce (claimed)iThe maker's claim for the force that presses the mop onto the floor. A claim in kilograms is converted at 1 kgf = 9.80665 N and rounded to one decimal, so 1 kg is 9.8 N. When the maker also gives a figure in N, that figure is stored. When the maker gives a range, such as 9-11 N, the top of the range is stored.

6N3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK page: 6N Downforce. The US page states no figure

13N1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Up to 13 N. Needs Deep Cleaning for Heavy Dirt or Stains enabled in the app (global page footnote)2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 20268 N for ordinary mopping, 13 N when tough stains are detected

Mop speed (claimed)iHighest rotation speed of the spinning pads or the mop roller that wipes the floor. The speed of another roller that does not wipe the floor is not stored here.

160rpm3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK page: 160RPM Mop Spin Speed. The US page states no speed. Same mop hardware is assumed because both regions call the model D30 Ultra

200rpm2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026200 RPM dual spinning mop

Robot water tankiClean water held in the robot itself. The base station tanks are separate.

Not available

69mL3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026Compare table shows 69 ml

Water flow levelsiNumber of water flow settings the user can pick for mopping.

Not available

Not available

Base station

7 of 10 differ

Base stationiThe main jobs of the dock sold with this model. Auto-empty means the dock sucks the dust out of the robot. Mop washing means the dock cleans the mop.

Auto-empty and mop washing1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: PowerDock with 100-day auto-empty into a dust bag, auto mop self-cleaning on a washboard and auto mop air-drying

Auto-empty and mop washing2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Base station featuresiExtra dock functions. Hot-air drying dries the mop with warm air. Auto detergent adds cleaning solution by itself. Robot tank refill fills the robot's water tank. Self-cleaning wash tray means the dock cleans its own mop washing tray.

Hot-air drying, Self-cleaning wash tray1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: Auto Mop Air-Drying and AceClean DryBoard washboard self-cleaning with 20 high-temp spray nozzles. The UK spec table says drying is by hot air and lists no auto solution adding and no robot tank refill, so those two are not stored

Hot-air drying, Auto detergent, Robot tank refill, Self-cleaning wash tray2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Hot-air drying (55 C), automatic detergent dispenser, warm water tank refilling, dock self-cleaning with hot water

Base station water supplyiWater tanks means clean and dirty water tanks that the user fills and empties. Plumbed means the dock connects to a water inlet and a drain. The third option has tanks and a plumbing kit sold separately.

Water tanks1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Clean/Used Water Tank Capacity 4.5L/4.0L. No plumbing kit is mentioned

Water tanks2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Saros 20 with manual water replacement. The Saros 20 with Refill and Drainage System, sold in certain regions, is the plumbed variant row.

Base station dust containeriWhat the dock empties the robot's dust into.

Bag1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: 3.2L dust bag. Dust bags are in the box

Bag4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026Parts list names A9 Disposable Dust Bag

Base station dust capacityiCapacity of the dust bag or bin in the dock.

3.2L1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Dust Bag Capacity 3.2L

2.7L6Measurementvacuumwars.com/compare/robot-vacuums/roborock_saros_20Read 14 October 2026Compare page lists bag capacity 2.7 l. No maker figure found

Days between bag changes (claimed)iThe maker's estimate of how long the dock holds dust before it must be emptied. Makers assume different homes, pets and schedules.

100days1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: up to 100 days of auto-empty. Footnote: based on in-house lab data. Conditions not stated

65days2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Up to 65 days. Maker internal test. Actual intervals depend on usage habits and environment

Clean water tankiClean water tank in the base station.

4.5L1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Clean/Used Water Tank Capacity 4.5L/4.0L

Not available

Dirty water tankiDirty water tank in the base station.

4L1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Clean/Used Water Tank Capacity 4.5L/4.0L

Not available

Mop wash water temperature (claimed)iHighest water temperature the dock uses to wash the mop. The maker's own figure. Makers measure at different points, so values are not comparable between makers. The measuring point is required in the source note. A maker can claim another figure in another market, so it is per variant.

Not available

100°C2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Up to 100 C (212 F) at the clean water dispensers of the base, standard atmospheric pressure

Mop drying air temperature (claimed)iTemperature of the warm air the dock blows over the mop. The maker's own figure. Makers measure at different points, so values are not comparable between makers. The measuring point is required in the source note.

50°C3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK page: 50 C hot air for drying the mops. The measuring point is not stated

55°C2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Air at the base outlet during drying can reach 55 C

Battery and charging

4 of 6 differ

Battery capacityiPublished capacity of the robot's battery pack at the nominal battery voltage. When the maker gives a typical or headline figure and a lower rated figure, the headline figure is stored and the rated one goes in the source note, as for Dreame. A rated figure alone is stored. A count times a capacity, such as 2600 mAh x 2, is not a pack capacity. The total is stored only when the maker or a review states it.

5,200mAh1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Battery Capacity 5,200mAh. The EU manual gives a rated capacity of 4.8 Ah, so 5,200 mAh is the headline figure

6,400mAh1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Published as 6,400 mAh lithium-ion4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026Basic Parameters: 6400 mAh typical

Battery voltageiNominal pack voltage, such as 14.4 V.

14.4V4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026Specifications page of the Polish D30 Ultra user manual (EU edition, robot model RTD31TE, base RCDE0401): rated voltage 14.4 V. The manual is a retailer-hosted copy in Polish

14.4V4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026Basic Parameters: 14.4 V / 6400 mAh (TYP) lithium-ion battery

Rated poweriRated electrical power of the robot from the spec sheet, label or manual. The base station's power is not included. A charger input rating from the manual, such as 20 V 2.5 A, is not this value.

75W4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026Specifications page: robot rated power 75 W. The base station is rated separately at 700 W during dust emptying

65W3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026Compare table shows Nennleistung 65 W

Max run time (claimed)iLongest run time on one charge that the maker claims. Makers usually state it in the quietest suction mode without mopping. Claims that include charging breaks are not stored.

230min1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: up to 230 minutes and 156 m2 of continuous cleaning. Footnote: in-house lab data in Vacuum Only mode under Quiet Suction. The UK spec table says 250 min but its own text says 230 min

200min3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026Compare table shows 200 min in quiet mode. The Australian store lists 180 min for a Saros 20 column and Vacuum Wars lists 190 min, the German page is the maker figure with a named mode

Full charge time (claimed)iThe maker's claim for charging from empty to full. A partial charge, such as 9 to 80%, is not stored.

240min4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026Specifications page: charging time about 4 hours, stored as 240 minutes. The UK spec table says 3.5 hours and the US page says 30 percent faster off-peak charging. The manual wins over the product page

150min2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Published as 2.5-hour fast charging. Stored as 150 minutes

Recharge and resumeiThe robot returns to the dock to charge and then finishes the job where it stopped.

Yes1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: automatically recharging and resuming cleaning when power runs low4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026The robot returns to the base to recharge on low battery and then resumes cleaning

Yes4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026Manual says the robot resumes where it left off after charging when the battery runs low during a cleaning cycle

Noise

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Noise (claimed)iOne row per noise figure the maker publishes. Suction mode is the maker's mode name, such as "Standard". When the maker gives a range, the top of the range is stored. A row leaves out the activity or the mode when the maker does not name it, such as a figure for quiet mode alone or a bare figure with neither.

ADreame D30 Ultra

Noise (dB(A))
76

Source3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK spec table: Noise level 76 dB(A) at most. No mode or activity is named. The US page gives no noise figure

BRoborock Saros 20

Suction mode	Noise (dB(A))
Balanced	63

Source3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026Compare table shows 63 dB in balanced mode. Weighting and activity are not stated, so the row has no activity

Connectivity and app

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Wi-Fi standardi802.11n is Wi-Fi 4, 802.11ac is Wi-Fi 5 and 802.11ax is Wi-Fi 6. Use the highest protocol the manual lists. None only when a source says the robot has no Wi-Fi.

Not available

Wi-Fi 65Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20CE%20DE%20User%20Manual.42242813.pdfRead 14 October 2026RF Specification table lists 802.11b/g/n/ax on 2.4 GHz and 802.11a/n/ac/ax on 5 GHz. The maker does not use the name Wi-Fi 6. Vacuum Wars lists 2.4 GHz only

Wi-Fi bandsiBands the maker's manual or spec table states. Many robots use 2.4 GHz only. Vacuum Wars' Wi-Fi version column is not used for this field.

2.4 GHz4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026Setup note: only 2.4 GHz Wi-Fi is supported

2.4 GHz, 5 GHz5Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20CE%20DE%20User%20Manual.42242813.pdfRead 14 October 2026RF Specification table lists 2.4 GHz and 5 GHz. Vacuum Wars lists 2.4 GHz only. The maker manual is used

Bluetooth versioniAs published, such as "4.1". Robots use Bluetooth for setup.

Not available

5.45Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20CE%20DE%20User%20Manual.42242813.pdfRead 14 October 2026RF Specification table lists BLE v5.4

MatteriThe maker states Matter support. Support that is only promised for a later update is not counted.

Yes3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK page: with Matter protocol support the robot integrates into your smart home. Vacuum Wars and a comparison site say no Matter. The EU model RTD31TE has a Matter certification entry. The US page does not mention Matter7Spec databasematterdevices.io/wifi/dreame-d30-ultra-robot-vacuumRead 15 October 2026Listing for the Dreame D30 Ultra Robot Vacuum, model RTD31TE, transport Wi-Fi, with a CSA certificate ID dated 2025. The listing is for the EU model code. Matter version not listed

Yes1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026

Voice assistantsiThird-party assistants that can control the robot, such as "Amazon Alexa".

Amazon Alexa, Google Assistant, Siri3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK spec table: voice control via Siri, Alexa and Google Assistant

Amazon Alexa, Google Home, Siri Shortcuts1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Published as Matter protocol compatible with Siri Shortcuts, Alexa and Google Home

Built-in voice controliThe robot has its own microphone and responds to spoken commands without a smart speaker.

Not available

Yes1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Hello Rocky voice assistant

Companion appiThe maker's phone app for the robot, by name.

Dreamehome4Owner's manualmediaexpert.pl/products/files/96/9680548/Instrukcja-obslugi-Dreame-D30-Ultra-Bialy.pdfRead 15 October 2026Setup: install the Dreamehome app and scan the QR code under the robot lid

Roborock app4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026Setup section tells the user to search for Roborock in the app store

Saved mapsiNumber of floor maps the robot can store, for homes with several levels.

41Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Page: creates up to 4 maps

Not available

Live videoiThe app can show the robot's camera view live.

No3Maker product pagedreamestore.co.uk/products/dreame-d30-ultra-robot-vacuumRead 15 October 2026UK spec table: Remote video surveillance no5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars software table: Live Video Monitoring no

Yes1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026Video calling through the built-in RGB camera

Measured

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Suction at the brush housing (measured)iSuction pressure a reviewer measured with a manometer at the robot's brush housing on the highest power setting. It is far lower than the maker's figure and is not comparable to it.

0.95kPa5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars suction test: 0.95 kPa on the highest setting

Not available

Airflow (measured)iAirflow at the suction inlet on the highest power setting, measured by a reviewer with an anemometer.

17CFM5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars airflow test: 17 CFM

15CFM6Measurementvacuumwars.com/compare/robot-vacuums/roborock_saros_20Read 14 October 2026Vacuum Wars airflow test, anemometer, maximum power setting. Compare page and review both give 15 CFM7Reviewvacuumwars.com/roborock-saros-20-reviewRead 14 October 202615 CFM bench test at maximum power

Embedded sand pickup on carpet (measured)iShare of sand worked into medium-pile carpet that the robot removed in a timed run on the highest power setting. The reviewer weighs the robot's bin before and after.

84%5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars carpet deep clean test: 84, which the compare page lists as the embedded sand result

89%6Measurementvacuumwars.com/compare/robot-vacuums/roborock_saros_20Read 14 October 2026Vacuum Wars Carpet Deep Clean Test: sand embedded in medium-pile carpet, fixed time run on maximum power, dustbin weighed before and after7Reviewvacuumwars.com/roborock-saros-20-reviewRead 14 October 202689 percent embedded sand removed, category average 78 percent

Pet hair pickup on carpet (measured)iShare of a fixed weight of flattened pet hair, about 2.5 inches long, removed from carpet in two runs. The reviewer weighs the hair left behind.

61%5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars 2.5 inch flattened pet hair pickup test: 61 percent

88%6Measurementvacuumwars.com/compare/robot-vacuums/roborock_saros_20Read 14 October 2026Vacuum Wars 2.5-inch flattened pet hair test: two consecutive runs on carpet, remaining hair weighed7Reviewvacuumwars.com/roborock-saros-20-reviewRead 14 October 202688 percent of 2.5-inch flattened hair removed, category average 82 percent

Max threshold (measured)iHighest single threshold the robot cleared on a reviewer's test rig.

Not available

57mm7Reviewvacuumwars.com/roborock-saros-20-reviewRead 14 October 2026Vacuum Wars single-step test (starts at 19 mm, adds about 6 mm strips). The robot crossed 57 mm after some repositioning. Review last updated 2026-08-28

Test obstacles avoided (measured)iNumber of the 24 test objects the robot steered around in Vacuum Wars' standard and torture obstacle tests.

86Reviewvacuumwars.com/dreame-d30-ultra-reviewRead 15 October 2026Vacuum Wars obstacle avoidance tests: combined 8 out of 24 (standard test 6 of 12, torture test 2 of 12), average 16. Review last updated 2026-09-15

177Reviewvacuumwars.com/roborock-saros-20-reviewRead 14 October 2026Standard and torture obstacle avoidance tests: avoided 17 out of 24 obstacles. The category average is 16.

Area per charge (measured)iFloor area the reviewer estimates per charge from measured battery use and a fixed floor plan, on the lowest suction setting without mopping. Vacuum Wars multiplies battery efficiency by navigation efficiency. It is not a full-charge run.

170.11m²5Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_d30_ultraRead 15 October 2026Vacuum Wars Square Foot Per Charge: 1831 square feet. 1831 x 0.09290304 = 170.11 m2. Battery efficiency 2.05 minutes per percent. Lowest suction, no mopping

96.53m²6Measurementvacuumwars.com/compare/robot-vacuums/roborock_saros_20Read 14 October 2026Compare page 1039 sq ft times 0.09290304. The review text says 1,038 sq ft, an estimate from battery efficiency of 1.44 min per percent and navigation efficiency of 0.67 m2 per min. Low-power setting without mopping on a fixed floor plan

Dimensions and weight

5 of 8 differ

Robot shapeiShape seen from above. D-shaped means a flat front and a round back.

Round1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Round body in maker photos. Dimensions 350 x 350 mm

Round2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Round body seen in maker photos. Retailer listings also say round

Robot widthiWidth of the robot from side to side.

350mm1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Robot Vacuum Dimensions 13.78in (350mm) x 13.78in (350mm) x 3.81in (97mm). The UK table gives 350 x 350 x 97.2 mm

350mm2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Axis order differs between Roborock pages (353 x 350 here, 350 x 353 on the German and US pages). Width and depth are within 3 mm of each other

Robot depthiLength of the robot from front to back. The Length in a maker's Length x Width x Height is the depth.

350mm1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026See the width note

353mm2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026See width note

Robot heightiHeight at the robot's lowest operating position. A fixed lidar turret is included. A retractable turret is lowered. This decides which furniture the robot fits under.

97mm1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: 3.81in (97mm). The laser sensor is fixed, so this is the operating height

79.8mm2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Robot dimensions 353 x 350 x 79.8 mm. The German page and retailers list 350 x 353 x 79.8 mm. Body height 79.8 mm, with 79.5 mm reachable by passive compression

Height with sensor raisediHeight with a retractable lidar turret raised. Empty for a robot without a retractable sensor.

Not available

Not available

Robot weightiRobot with battery and dustbin, without the base station. Some store pages label the robot and dock together as Robot Weight. Check that the figure fits the robot alone.

3.89kg(8.6 lb)1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Robot Vacuum Weight 3.89kg

5.05kg(11.1 lb)2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026

Base station dimensionsiWidth, depth and height of the dock. When the maker gives the depth with and without the ramp, the depth with the ramp is stored. Makers write the axes in different orders, so they are mapped with care. A size the maker gives for the robot and dock together counts only when the robot sits inside the dock's footprint, and the source note says so.

Width457Depth340Height590mm(18 × 13.4 × 23.2 in)1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Base Station Dimensions 17.99in (457mm) x 13.38in (340mm) x 23.23in (590mm). Axis labels are not printed. The UK table lists the dock as 350 x 456.7 x 590.5 mm in L x W x H, so 457 is the width and 590 the height. The depth is stored as the US figure 340

Width381Depth475Height488mm(15 × 18.7 × 19.2 in)2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Dock 381 x 475 x 488 mm for the manual water replacement dock, width x depth x height as listed by the German page and retailers

Base station weightiDock without the robot and with empty tanks.

8.86kg(19.5 lb)1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Spec table: Base Station Weight 8.86kg

10.54kg(23.2 lb)2Maker product pageglobal.roborock.com/pages/roborock-saros-20Read 14 October 2026Dock 10.54 kg for the manual water replacement version

Certifications

None of 1 known

FCC IDs

Not available

Not available

Other certificationsiNamed certifications, verbatim, such as a TÜV SÜD or UL Solutions cybersecurity mark.

Not available

Not available

In the box

1 of 1 differ

In the boxiItems supplied with this exact model, verbatim.

D30 Ultra Robot Vacuum x1, Base Station x1, Main Brush (pre-installed) x1, Brush Guard (pre-installed) x1, Side Brush (pre-installed) x1, Dust Box (pre-installed, including filter) x1, Mop Pads (pre-installed) x2, Mop Pad Holders x2, Dust Bags (pre-installed x1) x2, Base Station Ramp Extension Plate x1, Quick Start Guide x1, User Manual x11Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026Package List on the US page

Robot Vacuum, Multifunctional Dock, Dock Base, Power Cable, Rotating Mop Module (1 set), User Manual, Dust Bag, Mop Pad1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026US page What's in the Box list3Maker product pagede.roborock.com/products/roborock-saros-20Read 14 October 2026German page lists robot, multifunctional dock, dock base, power cable, rotating mop module and user manual

Links

Not compared

Product page

www.dreametech.com/products/d30-ultra-robot-vacuum1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 2026US store product page

us.roborock.com/products/roborock-saros-201Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 2026

Spec sheet

Not available

Not available

Manual

Not available

gl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdf4Owner's manualgl-files.roborock.com/product/center/images/Roborock%20Saros%2020%20FCC%20User%20Manual.41593654.pdfRead 14 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

3years1Maker product pagedreametech.com/products/d30-ultra-robot-vacuumRead 15 October 20263-Year Warranty shown on the US store page

1year1Maker product pageus.roborock.com/products/roborock-saros-20Read 14 October 20261-year limited warranty on the US store page

Both are also in the API. Back to all robot vacuums.