Robot Vac Reality product guide
eufy RoboVac 11S MAX Robot Vacuum Cleaner (T2126)
Low furniture and hard floors, with no app or account involved
A 2.85-inch-tall robot vacuum that slides under furniture a taller model cannot reach. It has no Wi-Fi, no app and no map: it navigates by bouncing off obstacles and is driven by an infrared remote. eufy rates it at 2000 Pa in Max mode, with about 100 minutes on hard floors in Standard.
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Published specifications
- Maker page: no Wi-Fi, no app, no Alexa; infrared remote and on-robot button only
- Maker FAQ: Bounce navigation, no mapping; boundary strips not supported
- Manual: 2000 Pa in Max mode, 0.6 L dust collector, 14.4 V 2600 mAh battery
- Maker page: 2.85 in tall, passes under 2.87 in, climbs a 0.63 in threshold
- Maker FAQ: about 100 min Standard on hard floors, 60 min BoostIQ, 40 min Max
- Manual: filters cleaned weekly and replaced every 2 months; 12-month coverage
Fit and limits
Strengths
- 2.85 inches tall, so it reaches under furniture most mapping robots cannot
- No app, no account and no cloud: it runs entirely from a remote and a button
- Manual prints a full cleaning and replacement interval for every part
Caveats
- No mapping, no room targeting and no no-go zones, only bounce navigation
- Charging base needs 1 m clear each side and 2 m in front, away from stairs
- Not recommended on carpets over 26 mm, plush pile, tassels or very dark floors
There is no app, and there is no map
The 11S MAX is model T2126, and the listing says plainly in its fifth bullet that it does not support Wi-Fi or app connectivity: everything is done with the remote control and the buttons on the robot. eufy's own comparison table confirms it, marking Wi-Fi Connected and Works with Amazon Alexa as absent for the 11S Max while its sibling the 15C Max has both. The manual backs this up too, applying all of its Wi-Fi troubleshooting only to the 15C Max.
Just as important is how it finds its way. eufy's FAQ describes the navigation as Bounce technology: the robot changes direction when it meets an obstacle and works in a back-and-forth travelling motion. There is no laser, no camera and no map, so there are no room names, no no-go zones and no way to tell it to clean the kitchen only. eufy's comparison table also lists boundary strips as not included, so blocking an area means physically blocking it.
What you do get is a remote with a clock. Cleaning can be scheduled for one time of day, set on the remote, and the manual warns that removing the remote's batteries will cancel that schedule once you next press a button, while turning the robot's main power switch off will not.
Three different runtimes, depending on what you ask of it
Amazon's details table lists Battery Life 100 minutes and the bullet says up to 100 minutes on hardwood floors. eufy's FAQ is more useful because it breaks the figure down by mode: about 100 minutes in Standard suction on hardwood, about 60 minutes in BoostIQ mode on carpeting, and about 40 minutes in Max suction on medium-pile carpets. The manual's specification table gives the same maximum, 100 minutes.
Charging takes a long time by modern standards. Both eufy's FAQ and the manual's specification table say 300 to 360 minutes, that is five to six hours, from empty. The battery is a 14.4 V lithium-ion pack rated 2600 mAh, and the manual says it is replaceable only by a skilled professional.
The robot returns to the charging base when the battery gets low or when it finishes, but nothing in either source describes resuming an interrupted clean afterwards. Treat a run as ending when the battery does.
Suction, modes and what BoostIQ actually does
The manual's specification table gives Max Mode Suction Power as 2000 Pa for the T2126, against 1300 Pa for the plain 11S, and eufy's comparison table repeats 2000 Pa. That is a maker figure with no stated test standard, so treat it as a claim rather than a measurement.
There are three suction levels selected on the remote: Standard, BoostIQ and Max. BoostIQ is the default, and the manual describes it as automatically switching between standard and enhanced power when the robot senses it needs more, which cuts cleaning time but raises the noise. eufy's listing bullet says the switch happens within 1.5 seconds. The manual notes BoostIQ only works in Auto and Quick cleaning modes.
The modes themselves have fixed durations worth knowing before you press a button. Auto runs until the job is done. Quick stops after 30 minutes and docks. Edge follows walls for 20 minutes then docks. Spot cleans a spiral for 2 minutes. There is also a manual mode where you drive it with the remote's arrow keys, within about 16 feet (5 m) of the robot.
Height, thresholds and the carpets it should not touch
The body is 2.85 inches tall, and eufy's FAQ gives the practical number that follows from it: the lowest height it can pass under is 2.87 inches (73 mm). That is genuinely low, and it is the main reason to choose this robot over a taller LiDAR model if your furniture sits close to the floor. Amazon's dimensions of 12.79 by 12.79 by 2.85 inches and 6.34 pounds match eufy's.
The climbing threshold is 0.63 inch (16 mm) on eufy's comparison table. The manual puts the same number the other way round as a warning: the robot may climb on top of objects less than 0.63 inch high, so remove them if you can. Door saddles and thin rug edges around that height are where it will either cross or get stuck.
Carpet limits are explicit in both sources. eufy says it is not recommended on carpets thicker than 26 mm (1.02 inch) or on plush carpets, not on very dark-coloured floors, and not on rugs with tassels, which the manual asks you to fold underneath. The manual adds that the drop sensors work less well on reflective or very dark floors and that you should use physical barriers near stairs, especially a staircase edge covered by a rug, which is one of its named stuck scenarios.
The base needs a surprising amount of clear floor
The manual's setup step is specific: put the charging base on a hard, level surface against a wall, then remove objects within 3 feet (1 m) of the left and right sides and within 6 feet (2 m) of the front. It also says not to place the base within 3 feet (1 m) of stairs or a drop. That is a clear zone about 12 feet wide, far more than the base itself occupies, and the same clearances reappear in the troubleshooting section as the first fix when the robot cannot get home.
The base should not sit on a rug or carpet, and it has to stay plugged in, because the manual says the robot will not return to it otherwise. Strong sunlight is a named cause of the robot getting stuck, so a base in a sunny spot is worth reconsidering.
Power is a 19 V 0.6 A adapter, and eufy's FAQ says the robot works on mains supplies from 100 to 240 V with the regional charger supplied in the box. Amazon's table lists Voltage 240 volts, which describes neither the adapter's output nor the US supply; ignore it.
Maintenance schedule, filters and warranty
The manual prints a clear table of intervals, which is rare at this price. Dust collector: empty after each use. Filters: clean weekly, replace every 2 months. Rolling brush: clean weekly, replace every 6 to 12 months. Side brush: clean monthly, replace every 3 to 6 months. Brush guard: clean monthly, replace every 3 to 6 months or when the silicone strip looks worn. Sensors, charging pins and the swivel wheel: clean monthly.
A filter change every two months is the running cost to plan for. The 11S Max uses a 3-in-1 filter, and the manual is specific about washing: the dust collector, pre-filter and foam filter can be washed with water and must be air-dried fully, but the high-performance filter must not be washed because it can be damaged and lose suction, and no brush, hot water or detergent should be used on the filters. The dust collector itself holds 0.6 litre, which matches Amazon's 600 ml field.
Both eufy's comparison table and Amazon's warranty field say one year, and eufy's own what-you-get text calls it a worry-free 12-month warranty. We did not open eufy's warranty terms, so the conditions, exclusions and claim route are unread here. Check the seller and condition of the offer you select, since coverage of this kind normally depends on the purchase record. Two safety lines from the manual are worth repeating: household indoor use only, never on wet surfaces, and never run it without the dust collector and filters in place.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- eufy US product page for the RoboVac 11S MAX (T2126)
- eufy Owner's Manual for 11S (T2108), 11S Max (T2126) and 15C Max (T2128)
Primary sources checked .
Compare with
- Shark AI Ultra AV2511AE Robot Vacuum with XL Self-Empty Base
People who want self-emptying without buying dust bags
- Roborock Q10 S5+ Robot Vacuum and Mop with Auto-Empty Dock
Hard floors and low-pile carpet, with a wall run free for the dock
- iRobot Roomba 105 Vac Robot Vacuum
A simple LiDAR vacuum where you do not mind emptying the bin
- Roborock Qrevo S Pro Robot Vacuum and Mop with Multifunctional Dock
Hard floors where a four-foot clear run in front of the dock is possible
Side-by-side pages, this model next to: Shark AI Ultra AV2511AE Robot Vacuum with XL Self-Empty Base, Roborock Q10 S5+ Robot Vacuum and Mop with Auto-Empty Dock, iRobot Roomba 105 Vac Robot Vacuum, Roborock Qrevo S Pro Robot Vacuum and Mop with Multifunctional Dock.