Stihl RMI 422P Robotic Lawnmower
Stihl RMI 422P Robotic Lawnmower
£1,056.88 excl. VAT
£1,268.26 incl. VAT
The compact RMI 422 P iMow robotic lawn mower is perfectly suited for small to medium sized lawns. As it is fully automated, once the iMow is installed it will mow, charge and adapt its schedule all by itself. Thanks to an efficient mulching blade the lawn will look lush and green without ever having to dispose of the grass clippings. Equipped with a powerful battery, the RMI 422 P can handle lawns up to 1,500 m², gradients up to 40% and is designed to do all this in the shortest time possible, allowing you full access to your garden when you want it. The RMI 422 P comes with a 5 year extended domestic warranty (subject to registration and annual servicing). For more information please contact your local STIHL iMow dealer. The STIHL iMow robotic mowers comply with all applicable safety standards. However, the iMow robotic mower is not a toy. During the iMow robotic mower’s active times, in particular children, bystanders and animals must be kept out of the working area. Please refer to the operating instructions for further information.
The control panel is integrated into the housing of the STIHL iMow robotic mower and features a large LCD display. It provides a intuitive way of recording all settings, as well as a way of viewing all functions and performance data of the automatic lawn mower. The high-contrast, bright display is easy to read even in sunlight.
The movable hood with sensors 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 changes direction.
The STIHL iMow robotic mower is equipped with various sensors. As soon as someone attempts to pick it up while mowing, it stops. In addition, the automatic lawn mower can be protected with a PIN code. If it is configured so that it can only be operated by entering a PIN, it is protected from unauthorised use.
Standard equipment for the STIHL iMow robotic mower includes the machine, the docking station, four pegs for securing the docking station to the ground as well as an iMow ruler as an aid for laying the perimeter wire. An installation kit is also required to install the iMow robotic mower.
The docking station is included as standard equipment for the STIHL iMow robotic mower. It is both the robotic mower’s home and where it charges its battery. At the same time, it is the starting point for every mowing operation. When driving, the automatic lawn mower is guided by the signal transmitted by the perimeter wire at the edge of the lawn. This signal is fed via the docking station. If it rains or the battery runs down during mowing, the iMow robotic mower independently returns to the docking station and recharges its battery. Thanks to its intelligent charging system, the iMow decides independently whether an express charge is necessary due to another imminent mowing operation or whether the battery should be charged more gently in normal mode. The docking station can be placed within or outside the lawn area.
The sturdy iMow mulching blade ensures a precise cutting pattern even on higher grass growth. Its rotational direction changes automatically every time the blade stops. This means that the blades of the automatic lawn mower wear evenly. The blade can be changed without the need for tools.
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.
The control panel with integrated and bright display is used on all STIHL iMow robotic mowers for easy setup and fast display of machine information. The high-contrast display means the control panel can also be used in sunlight. The panel is flush-mounted in the housing of the automatic lawn mower.
The STIHL iMow robotic mowers feature a drive that enables them 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%.
Using the adaptive slope speed function, the STIHL iMow robotic mower adapts its speed on uneven terrain. The integrated tilt sensor constantly analyses the position of the automatic lawn mower and adapts its speed accordingly.
Using the STIHL iMow robotic mower interactive mowing plan, individual time windows during which the machine can be in operation can be defined for each day. Within these active times, the automatic lawn mower automatically determines the best times to mow for an optimum result. If it has to interrupt mowing because of rain, it automatically catches up later within the specified time window. The dynamic mowing plan can be called up and amended via the control panel.
The smooth-running wheels with traction pattern ensure that the STIHL iMow robotic mower moves with precision. Especially on hilly lawns with a gradient of up to 40% and dense grass growth. The treaded wheels of the automatic lawn mower are self-cleaning.
Maximum lawn area m²
Max. gradient %
Cutting width cm
Cutting height mm
Average mowing duration per week h
Nominal output W
Working speed rpm
Measured sound power level LWA dB(A)
Uncertainty factor Sound pressure level KpA dB(A)