Autonomous Scrubber-Dryer · Mid-format Available now

CenoBots L4.

The versatile mid-format autonomous scrubber-dryer for Perth retail aisles, supermarkets and gyms. 450 mm scrub path, passes a standard 32-inch doorway, and adapts its map on the fly.

CenoBots L4 mid-format autonomous scrubber-dryer
1,944m²/h
Coverage rate
450mm
Cleaning width
810mm
Fits a 32-in door
4.5h
Runtime per charge
Every angle

The L4 from every side.

Three-quarter, side and rear: the mid-format scrubber-dryer, control panel and squeegee assembly.

CenoBots L4, front three-quarter view
What it does

A mid-format scrubber-dryer that moves room to room.

The L4 is the versatile middle of the scrubber range, built for retail aisles, supermarkets, gyms and mixed mid-large floors. It wet-scrubs and dries sealed hard floors on a set schedule, covering more ground per pass than the compact L3 while still fitting where bigger machines are stuck outside.

The headline is access: at a 450 mm scrub path and an 810 mm minimum width, it passes through a standard 32-inch doorway, so one robot can move between stockroom, shopfloor and back-of-house without being lifted or boxed in. The 38 L solution and 36 L recovery tanks keep it scrubbing on long runs between refills.

On-board NVIDIA AI and an automotive-grade 32-beam 3D LiDAR classify obstacles and plan its path in real time, and it adapts its map on the fly as stock, signage and furniture move. Maintenance is quick: a 30-second squeegee swap and a tool-free magnetic brush. Free over-the-air updates and day-to-day control, including voice control, run through the Cenobots app.

Capabilities

What it does, in motion.

Short, silent loops: edge cleaning, the 32-inch door, supermarket aisles and obstacle avoidance.

Edge & corner cleaning

Tracks tight to walls and into corners, leaving less for a person to finish by hand.

Through a 32-inch door

Passes a standard 810 mm doorway, so one unit moves between rooms and zones.

Supermarket aisles

Runs long retail aisles to a consistent standard, around shoppers and trolleys.

Obstacle avoidance

Detects and steers around people, stock and fixtures without breaking its run.

Best for

Where the L4 earns its keep.

If your floors are mid-to-large and split across rooms or aisles, the L4 covers them without needing a bigger machine or a wider door.

Retail & supermarkets

Long aisles, checkout zones and back-of-house, scrubbed to a consistent standard around shoppers.

Gyms & recreation

Studio floors, foyers and circulation in fitness and leisure centres on sealed hard floors.

Education campuses

Hallways, halls and shared facilities, moving room to room through standard doorways.

Healthcare corridors

Clinic and facility circulation that needs a wider scrub path than the compact L3 but the same access.

Hospitality & venues

Function spaces, foyers and concourses kept presentable between events and through service.

Mixed mid-large floors

Showrooms, trade counters and multi-room facilities where one unit needs to do several spaces.

How it works

Mapped once, then it runs itself.

Site survey, a one-off map, then the L4 scrubs to a schedule and adapts as the floor changes.

Step 01

Plan

Our engineer scans your site, builds the 3D map and sets cleaning zones, exclusion areas and schedules across rooms.

Step 02

Scrub

The L4 follows its path with the brush down, classifying obstacles in real time and adapting its map as stock and signage move.

Step 03

Charge

At low battery, or end of cycle, it returns to the dock for a 2.5 hour recharge and resumes where it left off.

Step 04

Refill

Staff top up the 38 L solution and empty the 36 L recovery when the dashboard flags it. A 30-second squeegee swap keeps it running.

See it in action

The L4 on real floors.

Press play: working around forklifts, in an industrial facility, and a full walkthrough.

Working around forklifts

Shares a live floor with vehicle traffic, slowing and steering around forklifts.

In an industrial facility

Scrubbing larger industrial floors on a scheduled, unsupervised run.

Full L4 walkthrough

A short overview of the L4 from setup to scrubbing.

Specifications

Every number, on the record.

Headline numbers up top; full datasheet collapsed below. We confirm site-specific figures during the survey.

Performance
Category
Autonomous scrubber-dryer (mid-format)
Coverage rate
1,944 m²/h
Cleaning width
450 mm
Min. passable width
810 mm (passes a 32-inch door)
Runtime
Up to 4.5 hours
Tanks
38 L solution + 36 L recovery
Navigation & safety
Primary sensor
Automotive-grade 32-beam 3D LiDAR
Secondary sensing
Depth camera, bumper sensor, IMU
AI compute
NVIDIA · 32 TOPS
Operating sound
≥66 dB(A)
Brush pressure
20 kg
Min. distance to edge
30 mm
Power & physical
Charging time
2.5 hours
Max. speed
1.2 m/s
Dimensions (L×W×H)
810 × 615 × 1075 mm
Weight
150 kg
Suitability & software
Maintenance
30-second squeegee swap, tool-free magnetic brush
Software
Automatic map adaptation, free over-the-air updates, app voice control
Typical sites
Retail, supermarkets, gyms, education, mixed mid-large indoor floors
Certifications
None stated on datasheet
Australian deployment

One robot, several rooms.

Most WA retail and facility floors aren't one open plate. They're a shopfloor, a stockroom, a back-of-house and a foyer, divided by standard doorways. The L4 passes a 32-inch (810 mm) door, so a single unit can cover several spaces on one schedule instead of buying a machine per room or cleaning them by hand.

Automatic map adaptation matters in retail, where stock, end-caps and signage move constantly. The L4 re-plans around the day's layout rather than needing a remap every time the floor changes, so it keeps running as the space does.

Service distance matters. We're an Australian dealer (Fiction Labs Pty Ltd, trading as Perth Robots) with local engineers, local mapping, and parts on the ground in Perth. For metro deployments we offer same-day on-site response; for regional WA we ship spares overnight and resolve most software issues remotely via the cloud platform.

The L4 sits between the compact L3 and the industrial L50. For tight offices and corridors we deploy the L3; for large continuous wet floors, the L50. Different robot, same partnership, same management dashboard.

Service & support

Australian-based, end-to-end.

No offshore tickets. Perth-based engineers handle survey, deployment, training, mapping changes and incident response.

Mapping & deployment

Site survey, full 3D map, multi-room zone and schedule setup. We hand over a running system, not a box.

Operator training

On-site session for managers and supervisors. App and dashboard, refills, squeegee swap, escalation flow.

Response SLA

Perth metro: same-day on-site. Regional WA: next business day. Cloud-resolvable issues: under an hour.

Purchase, lease or RaaS

Outright purchase with a Care Plan, 2–4 year lease-to-own, or Robotics-as-a-Service: a fixed monthly fee, all-inclusive.

Working out whether a robot is cheaper than another cleaner on your floor? Open the WA cost calculator →

Why Perth Robots

Honest credibility, not just claims.

Engineering-led.

Built by someone who has engineered advanced systems and operated them in demanding environments — we know what these machines can and can't do.

WA-based service, not a reseller.

We deploy and service every unit ourselves across WA. If a robot's down at 2am on a mine site, that's on us — same time zone.

Multi-OEM, honest advice.

We recommend the right robot for your site, not the only one we carry.

Low-risk by design.

RaaS is a flat monthly subscription, not a capital gamble — the risk sits with us. Run the robot as often as you need.

FAQ

Common buyer questions.

Will the L4 fit through our doorways and between rooms?
Yes. It passes a standard 32-inch (810 mm) doorway, so one unit can move between shopfloor, stockroom and back-of-house on a single schedule. It scrubs a 450 mm path, wider than the compact L3 but narrow enough for mid-size aisles.
What sites and floor types is it built for?
Mid-to-large sealed hard floors: retail and supermarket aisles, gyms, education campuses, healthcare circulation and mixed multi-room facilities. For tight offices and corridors we deploy the compact L3; for large continuous wet floors, the industrial L50.
Our layout changes constantly. Does it need remapping?
No. The L4 adapts its map on the fly, re-planning around moved stock, end-caps, signage and furniture. It maps the site once at survey, then handles day-to-day changes. A remap is only needed for permanent structural changes.
How long does it run, and what's the maintenance like?
Up to 4.5 hours per charge, then a 2.5 hour recharge at the dock. Maintenance is quick: a 30-second squeegee swap and a tool-free magnetic brush, plus refilling the 38 L solution and emptying the 36 L recovery when the dashboard flags it.
Can it work around shoppers, staff and forklifts?
Yes. An automotive-grade 32-beam 3D LiDAR, depth camera and bumper let it slow for and steer around people, trolleys and forklifts in a live environment. It runs overnight or alongside your team without needing the floor cleared.
How do staff control it day to day?
Through the Cenobots app, including voice control, with start, stop, scheduling and run reports on the dashboard. Software updates arrive free over the air. Site staff get a short induction; we handle mapping, updates and support from Perth.
Is the L4 sold or leased?
Both. Outright purchase with a Care Plan, a 2–4 year lease-to-own, or Robotics-as-a-Service. Subscribe or own from as little as $50 a day, with service, support and software included.
Take the next step

See the L4 working at a site like yours.

Send us your site brief and we'll come back inside one business day with an indicative quote, the right unit for your floors, and a survey date.

Call us
Related

Smaller floor? Bigger floor?

The L4 is the mid-format scrubber in a fleet of nine. If your floors are tighter, larger or need spot cleaning, one of these fits better.