Stihl iMOW RMI 422 Robotic Lawn Mower - MowersUK

Stihl iMOW RMI 422 Robotic Lawn Mower


For small to medium lawns.

Cost shown does not include installation.

Installation prices can vary depending on garden size, for more information please call us.

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The STIHL RMI 422 Robotic Mower is a compact model from the STIHL iMOW® range of robotic mowers and is perfectly suited for use on small to medium lawns of up to 800m2. Fully automated, once installed it will mow, charge and alter its schedule all by itself. If the battery runs low it will take itself back to re-charge (either on fast-charge or energy-saving depending on how much lawn still needs to be mown) before continuing.

It comes fitted with a robust mulching blade which finely shreds the cuttings and returns them to the grass to fertilise it, leaving you with no clippings to dispose of and a health, well-fed lawn. With 15 different cutting height settings, the RMI 422 comes with a 5 year extended domestic warranty (subject to registration and annual servicing).

Movable hood – protects the STIHL iMOW® robotic mower from weather and obstacles. If the iMOW® robotic mower comes up against an obstacle during automatic mowing, the integrated sensors detect contact with the object and it changes direction.

Bright LCD Display – integrated control panel with a large LCD display that is easy to read even in direct sunlight.

All-round Protection – The STIHL iMOW® robotic mower is equipped with various sensors and will stop mowing as soon as it is picked up. It can be configured to only operate with a PIN code so protecting it from unauthorised use.

Standard Equipment – Standard equipment includes the machine, the docking station with four pegs for securing it to the ground and a ruler as an aid for laying the perimeter wire. An installation kit will be required to install the iMOW®.

Docking Station – The robotic lawn mower is guided by the signal transmitted by the perimeter wire at the edge of the lawn which is fed via the docking station. Thanks to its intelligent charging system, the iMOW® decides independently whether a fast charge is necessary due to another imminent mowing operation or whether the battery should be charged in an energy-saving mode. The docking station can be placed within or outside the lawn area.

Mulching Mowing Deck – ensures a precise cutting pattern even on higher grass growth. The rotational direction changes automatically every time the mower stops to give the blade even wear. The blade can be changed without the need for tools.

Offset drive home – By default, the iMOW® robotic mower travels back home to the docking station along the perimeter wire. If required, and depending on the condition of the edge of the mowing area, the iMOW® can also travel to its docking station with an alternating offset to the perimeter wire.

Control Panel – with integrated and bright display for easy setup and flush-mounted in the housing of the mower.

iMOW Robotic Mower Drive – enables the iMOW to mow hilly terrain with consistently high quality. The RMI 422 can handle gradients of up to 35%, while the other automatic lawn mowers from the RMI 4 series can cope with a gradient of up to 40%.

Adaptive slope speed – allows the robotic mower to adapt its speed on uneven terrain. The integrated tilt sensor constantly analyses the position and adapts its speed accordingly.

Dynamic mowing plan – the dynamic mowing plan can be called up and amended via the control panel.  It allows individual time windows during which the machine can be in operation to be defined for each day. If mowing is interrupted due to rain the iMOW automatically catches up later within the specified time window. 

Wheels with traction pattern – The smooth-running wheels with traction pattern ensure that the robotic mower moves with precision on hilly lawns with a slight gradient of up to 35% and denser grass growth. The treaded wheels of the automatic lawn mower are self-cleaning.

Technical data Value
Maximum lawn area m² 800
Average mowing duration per week h 16
Nominal output W 60
Battery type Lithium Ion
Working speed rpm 4.450
Cutting height mm 20-60
Uncertainty factor Sound pressure level KpA dB(A) 2
Weight kg 9
Measured sound power level LWA dB(A) 60
Max. gradient % 35
Cutting width cm 20

Please refer to our Delivery Policy

Additional information

Weight 9 kg
Dimensions 60 × 43 × 27 cm

Garden Size


Product Category

Robotic Mowers

SKU .NST63010121402

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