Roborock S8 Max Ultra with 8-in-1 RockDock® Ultra

This configuration runs from a wall outlet with self-contained tanks, so no plumbing is required. The dock empties the robot's 270 ml dustbin into a bag good for up to 7 weeks, washes the mop with water heated to about 140 F, dries it with 140 F heated air, refills the robot's 100 ml tank from a 4 L clean water tank, doses detergent from a 580 ml reservoir that lasts over 3 months, and cleans its own base. You fill the clean tank, empty the dirty tank, top up detergent, and change the dust bag; the Refill and Drainage version of this listing removes the tank chores by plumbing the dock in.

Four carpet modes are available in the app. Rise lifts the mop up to 20 mm and stops water so the carpet is vacuumed; Avoid keeps the robot off carpet entirely; Ignore is for homes without carpet or mats that can be mopped; Cross drives over door mats without cleaning them. You can also enable Vacuum carpet first, which vacuums all mapped carpet before the robot washes its mop and cleans the rest, or Deep carpet cleaning, which vacuums carpets twice in a cross-hatch pattern. Very dark or shag carpet may still be refused because the cliff sensors read it as a drop.

VibraRise 3.0 uses two vibration modules that scrub up to 4,000 times per minute to lift dust and dried-on stains, and the mop rises up to 20 mm when the robot is on carpet so it can vacuum and mop in one run without wetting rugs. A rotating edge mop spins at up to 185 rpm and reaches to within 1.68 mm of baseboards, lifting together with the main mop, while the FlexiArm side brush extends into corners and under furniture edges. The DuoRoller Riser Brush lifts in mop-only mode, when crossing tall thresholds, and when the robot returns to wash or charge.

By default the robot returns every 15 minutes of mopping for a wash; adjust the interval on the wash settings page or start a wash by holding the dock button while the robot is docked. Four modes are offered: Smart adjusts water and duration to how dirty the mop is, Light saves time and water on clean floors, Balanced suits medium-sized homes, and Deep uses more water and a longer cycle, and the dock re-washes the mop and sends the robot back to re-mop areas that its dirt detection flags. For hot washing, confirm Mop Washing with Hot Water is enabled in the app: the dock heats the sink to about 140 F (60 C), but hot water is used mainly in the early stage of the wash to work with the detergent and the final temperature depends on room and tank temperature, so a finished mop feels warm rather than hot. To check, pause the wash about 30 seconds after it starts and feel the mop; afterward the dock dries the mop with 140 F heated air.

Reactive 3D obstacle avoidance uses 3D structured light to recognize and steer around objects on the floor and shows a real-time obstacle icon on the map; it is not an RGB camera, so there is no remote viewing or photo capture. That is the main difference from the S8 MaxV Ultra, which adds a camera-based system, remote viewing, and a built-in voice assistant. When the robot approaches a pet it stops the main brush and moves aside in advance.

Auto-emptying only runs when the robot docks itself after a cleanup with the feature enabled; it skips runs that ended without cleaning, the Do Not Disturb window, and any time the dust container cover is off or the bag is full. The mop is only washed if it was used and the robot started from the dock, and auto-drying must be enabled in the app. A steady red dock light points to a missing dust container cover, a water tank that needs refilling, reseating, or emptying, a missing water filter, or a voltage error; reduced emptying usually means the main brushes or brush cover are not seated.

It connects to 2.4 GHz Wi-Fi only; 5 GHz is not supported, so choose the 2.4 GHz network on a dual-band router. Amazon Alexa, Google Home, and Apple Siri are supported once the robot is linked in the Roborock app; for Alexa, say "Alexa, open robo rock" and then the command. If pairing fails, re-enter the password, allow location and local network permissions for the app, switch off any VPN, and avoid WEP security or special characters in the network name; without Wi-Fi the buttons still run full cleanups, spot cleans, and dock returns.

Clean the DuoRoller main brushes every 2 weeks and replace them every 6 to 12 months; clean the flexible side brush monthly and replace it every 3 to 6 months; rinse the washable filter every 2 weeks and replace it every 6 to 12 months; clean the VibraRise and edge mop cloths as needed and replace them every 3 to 6 months. Clean the dock's maintenance brush as needed and replace it every 6 to 12 months, rinse the water filter and dirty water tank as needed, and replace the dust bag when full, roughly every 7 weeks. Use only cleaning solution recommended by Roborock, never disinfectant, and only cold water in the tank; operate between 39 and 104 F (4 to 40 C).

Put the dock on a hard, level floor against a wall with at least 2.7 ft (0.82 m) of clearance in height, 1.4 ft (0.42 m) in width, and 3.3 ft (1 m) in front of the RockDock Ultra, keep that area clear, and wipe the signal window on the front of the dock and the robot's front sensor; a robot that was carried elsewhere or just finished a spot clean rebuilds its map and may need to be placed on the dock by hand. Error 13 means dirty charging contacts: wipe them and the dock contacts with a cloth dampened with rubbing alcohol, check that the dock light is on with the robot off it, unplug the dock for two minutes, and try another outlet. Error 1 means the LiDAR turret is blocked or not spinning (clear it and restart), Error 7 means a wheel is jammed, and Error 8 means the robot is trapped, so clear the obstacles around it. An internal error calls for a factory reset, and Error 42 means the maintenance brush in the dock's washing tray is jammed; clear it and retry, and contact Roborock support if any code keeps returning.

Roborock covers new products such as the S8 Max Ultra with a one-year limited warranty from the purchase date against defects in materials and workmanship. Consumables such as filters, brushes, mop cloths, and dust bags are not covered unless a defect in a non-consumable part damaged them, and normal wear, cosmetic damage, misuse, and commercial use are excluded. Keep your receipt: without proof of purchase the warranty period defaults to three months from the factory ship date. Warranty and technical support run through Roborock US at support@roborock.com or 1-855-960-4321 (24/7); RoboticsSelect is an authorized dealer, ships free within the contiguous U.S., and accepts standard returns within 30 days.