Name: Dreame L40 Ultra
Brand: Dreame Technology
Price: 550 USD
Availability: LimitedAvailability

Dreame Technology (China) Dreame L40 Ultra (1)

~$550 (leftover stock)The original L40 Ultra launched at $799.99 and is sold out at Dreame US; Vacuum Wars tracked a listing near $552 in September 2026 (unconfirmed seller). The non-rootable L40 Ultra Gen 2 sells for $449.99 – $569.99.

Discontinued · used/leftover onlyOfficial API or root firmware11,000 PaLidarMop-washing dockValetudo

Possibly ≤ 1 weekShipping: undefined. The original L40 Ultra is sold out at Dreame US. New units turn up only from third-party sellers (unconfirmed), and Amazon search mostly returns the Gen 2. Amazon ↗

Remote control: After rooting with Valetudo the robot serves a local web UI, REST API and MQTT, so any computer on the network can control it. Unrooted, it is app only apart from the community Home Assistant integration.

Official page ↗Official page (L40 Ultra Gen 2, not rootable) ↗Valetudo supported robots ↗Valetudo Dreame rooting guide ↗Vacuum Wars Dreame guide ↗

Overview

The L40 Ultra is a cheaper sibling of the X40 Ultra with the same extending side brush and swing-out mops, and it is on the Valetudo list, so it can be rooted to run without the Dreame cloud. The catch is naming. Valetudo warns that only units sold as exactly "L40 Ultra" are supported, while the L40s, L40 Ultra AE and the current L40 Ultra Gen 2 are different hardware, and some markets sell rebadged L10s Pro Gen 3 units as "L40". Dreame US lists the original as sold out, so it is mostly found as leftover or used stock. The Gen 2 that replaced it (25,000 Pa, no camera) is the one sold new today.

Specifications

Category	Cleaning robots · Hackable & programmable
Released	2024
Country	China
Availability	Discontinued · used/leftover only
Programmability	Community / unofficial SDK
Built-in autonomy	Task-level · Carries out multi-step jobs on its own, such as inspections, deliveries or chores
LLM support	None · Voice commands through Alexa, Google or Siri only, no built-in LLM.
Best for	Ages 12+ (estimated)
Vision sensors	Lidar, Camera
Actuators	DC / gear motors
Audio	Speaker
Compute type	Other ARM chip
Remote control	Official API or root firmware
Size	350 × 350 × 103.8 mm (robot), dock 340 × 457 × 591 mm
Suction	11,000 Pa suction
Cleaning	Vacuum with a rubber main brush (TriCut brush sold separately) and an extending, lifting side brush, plus twin spinning mops that swing out to edges, lift 10.5 mm on carpet and can be dropped at the dock
Dock	Empties into a 3.2 L bag, washes mops with hot water and dries them with warm air, refills the robot
Navigation	Lidar (LDS) with room mapping
Obstacle avoidance	Line laser plus AI RGB camera and LED
Runtime	5,200 mAh battery (runtime not published)
Smart home	Dreamehome app, Alexa, Google Home, Siri, community Home Assistant integration
Sensors	Lidar, AI camera, line laser, carpet and cliff sensors, bumper
Compute	Allwinner ARM SoC running Linux (64-bit), per the Valetudo rooting guide; exact chip not published
API / hacking	No official API. Listed as supported by Valetudo, but only the exact "L40 Ultra". The L40 Ultra AE, L40s Ultra, L40s Pro Ultra, L40 Ultra Gen 2 and "L40" units that are rebadged L10s Pro Gen 3 are different, unsupported robots. Rooting uses the fastboot method with the Dreame Breakout PCB on a factory-reset robot, and units built from about August 2025 may need a device-ID fix