Lefant M330 Pro Review

The Lefant M330 Pro is the most sensor-rich machine under $150 on this site: dToF navigation scanning to 15 meters with multi-floor mapping, PSD sensors Lefant says detect furniture, cords and small objects, automatic carpet boost, a 200 ml mop tank and dual-band Wi-Fi. What it does not have is a suction figure - Lefant publishes no Pascal rating for it anywhere - and that single omission is the honest reason it is not our overall pick at this price.

#	Product	Best for	Score	Price
01	Lefant M330 ProPSD sensors that see cords and small objects, now with dToF mapping behind them. It publishes no suction figure at all, which is the trade.	Best obstacle avoidance under $150	7.5out of 10	$119.98 - View on Amazon #ad Price last verified September 21, 2026. How we are funded

Scores come from the published rubric on How We Pick: suction 25%, navigation 25%, pet hair 20%, running cost 20%, setup 10%. Editorial judgments about published specifications, not test results.

dToF navigation, scanning to 15 meters, with multi-floor maps. This is the specification that separates it from every other machine under $150 here. Direct time-of-flight measures how long a light pulse takes to return rather than reading its brightness, so - as Lefant's own listing says - it works in the dark and it does not drift in a sunlit room with a reflective floor. Multi-floor maps mean a two-story house is mapped once per level rather than re-learned every time you carry the machine upstairs. At this price, most of the field still has no map at all. Our navigation explainer sets out how dToF differs from the plain LiDAR one price band up.

PSD obstacle avoidance, with a 190-degree field. PSD - position sensitive device - is a proximity sensor, and Lefant does something unusual with the claim: it names what the sensors detect. Furniture, cords and small objects, with what the listing calls millimeter precision. That is a tier above the infrared bump sensors on the M210 and a tier below the structured light that sees a sock lying flat, and our obstacle avoidance ranking places it exactly there. What Lefant does not publish is a detection distance or a success rate, so the claim is specific about *what* and silent about *how well*.

No suction figure. None. The listing offers three modes - Quiet, Standard and Max - and never says what any of them measures. This matters more than usual here, because it is the question buyers actually ask: type the model name into a search box and one of the completions Google offers is its suction power. On our published rubric an unpublished figure is scored as unverified rather than assumed good, which is why a machine this well equipped takes a 5.5 on suction and lands at 7.5 overall rather than higher. The machine it replaced, the M310, published 4,500Pa. The successor publishes nothing, and we would rather tell you that than guess.

Carpet detection that works in both directions. In mop mode it steers away from carpet so the pad stays off your rugs; in vacuum mode it boosts suction to its maximum when it detects pile. The first of those is the one that matters - a damp pad dragged onto a rug is the commonest failure in this category, and most machines at this price need a no-mop zone drawn by hand to avoid it.

A 200 ml tank and a washable pad. This is maintenance mopping, not scrubbing: the pad is dragged, not driven, and it lifts the film of dust off a sealed floor without touching anything dried on. Lefant's listing carries its own warning worth repeating - empty the tank after mopping to prevent leaks and floor stains. If mopping is the point of your purchase, the Lefant N3 publishes an oscillation rate and this machine does not; our is a robot mop worth it guide explains why that is the whole difference.

An anti-tangle suction port and a 450 ml visible bin. Lefant's budget machines use a suction inlet rather than a roller brush, which means there is nothing for hair to wrap around - the reason the M210 has been our pet-hair pick at the bottom of the ladder since launch. The visible bin is a small thing that saves a real annoyance: you can see when it needs emptying rather than discovering it mid-run.

Dual-band Wi-Fi, no-go zones, scheduling, Alexa and Google. Dual band is the sleeper specification. Almost every machine on this site is 2.4 GHz only, and a mesh router that keeps handing devices to its 5 GHz radio is the commonest first-day setup failure in the category. This one connects to either. The listing also mentions Apple Watch support, which we cannot tell you anything about beyond the fact that it is claimed.

95 mm tall, up to 150 minutes, no dock. At 95 mm - about 3.7 inches - it is meaningfully taller than the 2.99-inch M210 and will not clear the lowest sofas that machine does; measure before you buy. The 150-minute runtime is respectable for the band. There is no self-emptying base: you empty the 450 ml bin by hand.

The M330 Pro's attribute table on its own listing states item dimensions of roughly 14 by 13 by 4.3 inches. A 14-inch-tall robot vacuum would not fit under anything, and the listing's own description says the body is 95 mm. Those numbers almost certainly describe the shipping box, and we treat them that way - but it is exactly the kind of loosely filled attribute that this site exists to catch, and a reminder to read the description rather than the table.

A cluttered hard-floor home on a firm budget, where the machine's real enemy is cords and furniture rather than deep dirt, and where a map matters - a two-story house especially. It is also the machine for anyone whose router has defeated a 2.4 GHz-only robot before. At this price nothing else here combines a real map, named-object avoidance and dual-band Wi-Fi.

Anyone who shops on suction figures. There is nothing to compare, and a specification-led buyer should treat that as disqualifying. The Tikom G8000 Max, at a similar price, publishes 5,000Pa.

Anyone with mostly carpet. The auto-boost is real, but a machine of this weight and price maintains low pile and skims anything deeper - see the carpet guide - and you would be paying for a mop you cannot use on it.

Anyone with low furniture. 95 mm is a full three-quarters of an inch taller than the M210. If your sofa clearance is the constraint, the cheaper machine is the right one.

Anyone buying primarily on brand longevity. Lefant publishes a one-year warranty and weekday support. That is normal for the tier and a thinner promise than iRobot's decade-deep parts supply, which is the whole argument of our Lefant vs Roomba comparison.

The iRobot Roomba 105 Vac costs a little more and trades the extra sensors for the most mature map and app in the category. The Tikom G8000 Max publishes a suction figure and a bigger tank, with no map at all. The Lefant M210 is cheaper, slimmer and simpler. And the under $150 band page ranks the whole shortlist against live prices.

We have not handled this machine. Everything above is read from published specifications and the manufacturer's own documentation, cited below. These are the specific claims we could not check:

• Suction. Lefant publishes no Pascal figure for any of the three modes, so there is nothing to verify and we have measured nothing.
• How reliably the PSD sensors avoid a specific object. Lefant names what they detect but publishes no detection distance or success rate, and we have not handled the machine.
• Whether the 15-meter dToF range holds in a real home, and how the multi-floor maps behave after furniture moves.
• Body height. We use the 95 mm the description states; the attribute table's 14-inch figure appears to be the box.
• Runtime. Up to 150 minutes is a maximum in the quietest mode, and Lefant does not say which mode.
• The Apple Watch support claim, which the listing mentions and does not explain.
• Battery longevity and noise. No cycle count and no decibel figure are published - see our battery life guide.

That list is not a disclaimer bolted on at the end. It is the actual scope of this review, and anywhere a competitor's confident phrasing implies they checked these things without saying how, it is worth asking the same question of them.