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.
The FJD RM21 is a multi-function robotic mower for schools, councils and sports grounds across Perth and WA. One 170 kg chassis mows 635 mm wide at 20–127 mm, then swaps to line marking, ball collection or grass collection, covering 12,000 m² per charge on RTK and LiDAR navigation. Supplied and serviced locally.
The deck cuts through the week. The LM01 marker, BP01 ball picker and GC01 grass collector bolt onto the same chassis when the job changes.
Most grounds budgets pay for mowing and line marking as separate labour: a contractor or crew on the ride-on through the week, then a second visit (or a marking service) before every fixture. The RM21 folds those jobs into one autonomous platform. Its 635 mm deck covers 12,000 m² on a single charge, and with fast charging it sustains up to 108,000 m² over 72 hours: enough for a school campus, a council reserve precinct or a golf course's surrounds.
The cutting range is the widest in the FJ Dynamics line-up: 20–127 mm, with the highest top cut of any unit in the range. That matters on WA kikuyu and couch ovals, where winter growth needs holding at height rather than scalping. Swap the deck's work for an attachment and the same chassis runs the LM01 line marker, the BP01 ball picker for driving ranges, the GC01 grass collector for clippings, or the DB01 dew brush.
For schools and clubs, that is the story: the robot mows the oval through the week and marks it before the weekend fixture, one machine and one schedule instead of two labour bills. League templates are confirmed at scoping, and combined mow-and-mark programmes are quoted per site assessment.
Navigation is RTK GNSS fused with LiDAR. RTK gives centimetre-level positioning but needs open sky, so we map tree cover and signal shadow at the site survey; the LiDAR keeps it tracking along tree-lined boundaries. Around people, the RM21 carries 360° LiDAR obstacle detection, front and rear bumpers and small-animal avoidance, and the app splits a precinct into zones, each with its own cut height and schedule.
If your site pays a mowing bill and a marking bill, you're the buyer. The RM21 suits managed turf with more than one job to do.
Ovals cut outside school hours and marked before sport, without a crew on campus. Multi-zone scheduling covers split sites.
Active reserves and sports precincts where the same asset mows through the week and marks for weekend fixtures.
One machine replaces two recurring labour bills: the weekly cut and the pre-game line marking.
Surrounds and rough at 20–127 mm, plus the BP01 picker clearing range balls overnight. FJD runs RM21s on courses in Poland and Sweden.
Consistent cut heights across large flats, with the grass collector managing clippings on presentation turf.
Common-area turf on a fixed schedule, and a fleet unit that makes repeat maintenance contracts profitable for contractors.
Site survey, RTK base and one-off map, then it runs itself. Attachments change the job; the schedule and zones stay in the app.
Our engineer surveys the site, sites the RTK base, checks tree cover for signal shadow, and maps zones, no-go areas and schedules.
The RM21 cuts each zone at its set height on schedule. When the job changes, the marker, picker or collector bolts onto the same chassis.
It auto-docks for a 3-hour fast charge and resumes where it left off. The dock lives under shelter: a shed, storeroom or covered enclosure we scope at the survey.
The app tracks coverage, status and schedules per zone; the GreenMaster fleet platform rolls multiple robots and sites into one view.
Manufacturer (FJ Dynamics) figures throughout. We confirm site-specific coverage and layout during the survey.
The RM21's case in WA is arithmetic: schools, councils and clubs pay twice for the same turf, once to cut it and again to mark it. Folding both into one autonomous platform, with the 127 mm top cut that kikuyu and couch ovals need after winter growth, is what no single-purpose mower offers. Mow-and-mark programmes are scoped and quoted per site assessment, with the three commercial models (RaaS, outright purchase with a Care Plan, or lease-to-own) all on the table.
The maker matters too. FJ Dynamics was founded in 2017 by former DJI chief scientist Wu Di, and FJD reports more than 200,000 units sold across 140+ countries, with RM21 deployments on golf courses in Poland and Sweden in its official case studies. The unit ships with a 24-month main-unit warranty and lifetime software updates under FJD's global policy.
The honest constraints: RTK positioning needs open sky, so heavily-canopied corners get mapped, zoned or excluded at the survey rather than discovered later; the charging dock's electronics need sheltered housing, so we scope a shed, storeroom or covered enclosure beside the grounds; and IPX4 sealing handles Perth winter rain, not standing water. Operating range is 0–45 °C, which covers metro and South West sites comfortably.
Service distance is the wedge. The main east-coast FJD dealer does not ship robots to WA at all. We supply and service FJ Dynamics robots across WA from Perth: local survey, mapping, attachment changeovers, blades and response in the same time zone. FJD's Rough Ranger, the RM21's successor on the same platform, is entering the line-up; ask us and we'll recommend whichever unit fits your timeline.
No offshore tickets. Perth-based engineers handle survey, RTK setup, deployment, training, mapping changes and incident response.
Site survey, RTK base siting, tree-cover check, zones and schedules set, dock housed. We hand over a running system, not a crate.
On-site session for grounds staff: the app, attachment changeovers, marking workflow, fault response and escalation flow.
Perth metro: same-day on-site. Regional WA: next business day. Most software issues are resolved remotely via the cloud platform.
Outright purchase with a Care Plan, 2–4 year lease-to-own, or Robotics-as-a-Service. Every RM21 programme is quoted per site assessment.
Built by someone who has engineered advanced systems and operated them in demanding environments. We know what these machines can and can't do.
We deploy and service every unit ourselves across WA. If a robot's down at 2am on a mine site, that's on us, in the same time zone.
We recommend the right robot for your site, not the only one we carry.
RaaS is a flat monthly subscription, not a capital gamble. The risk sits with us, and you run the robot as often as you need.
Two workflow loops from the FJD deployment toolchain, and two official user-site films.
RM21 at a Los Angeles golf course
RM21 line-marking a field in Oslo
Send us your site brief and we'll come back inside one business day with an indicative quote, a recommended set-up (mower plus any attachments), and a survey date.
The RM21 is the multi-tool. If your site is pure mowing at scale, extreme heat, or marking only, one of these is the better fit.
The mid-size workhorse for ovals and fairways: 25° working slope, battery swap for round-the-clock cutting.
730 mm cut, 108,000 m² over 72 hours, and rated to 55 °C: the unit for big precincts and mining villages.
Dedicated marking units for clubs and venues that paint more than they mow. Pro and Mini models.
The same model, indoors: autonomous sweepers and scrubbers for WA sites. See the cleaning fleet.