Kärcher RLM 4 robot lawn mower - (2019 model)

The Kärcher RLM 4: a robust companion for your garden

When lawn mowing is fun: The Kärcher RLM 4 is the ideal partner for gardens up to 500 m². A four-blade system ensures a thorough mowing result. The robot grass cutter reaches the lawn edge down to a few centimetres (with a cutting width of 20 cm). Specially rubberized wheels allow it to climb gradients up to ± 45 %. Theft protection included: PIN code lock and alarm function ensure security

A small mountaineer with a profile

Small but powerful: The Kärcher RLM 4 can handle gradients of up to ± 45 % without any problems. The rubberized wheels, which are equipped with a grippy profile, are responsible for optimum traction.

Quieter than a normal lawn mower

At only about 60 dB, the robot lawn mower is significantly quieter than a normal lawn mower. For this reason, it can also be used at times when, for example, a lawnmower would disturb your neighbours. The Kärcher can also be used at night, but we advise against this (nocturnal animals).

Mows when it rains if desired

The Kärcher RLM 4 is equipped with a rain sensor. This means that the robot mower detects when it starts raining. It then drives back to the charging base and only continues to mow when it has stopped raining. However, the rain sensor can also be set to mow when it is raining. 

Also drives over hilly lawns

The robot grass cutter mows both lawns with and without gradients very reliably. It easily mows inclines of up to + 45 %, because its rubberised wheels ensure a good grip - even on slippery terrain. It should be noted that there should be no incline along the boundary wire.

Four knives for the perfect cut

With its unique four-blade system, the robot lawn mower ensures a thorough mowing result. While two-sided sharpened cutting blades trim the grass, two clearing blades take care of the dirt in the body of the robot. The robot mower reaches the lawn edge down to just a few centimetres and passes narrow areas with a width of up to 60 centimetres. Even more: The cutting blades of the robot grass cutter can be mounted in the opposite direction as soon they are worn out and can therefore be used for a longer time.

Intelligent multi-sensor technology

The robot lawn mower is equipped with collision, tilt, lift and even loop sensors. When it rains, an adjustable rain sensor can be used to select if the robot grass cutter should continue mowing – or drive back to the charging station. Apropos charging station: If the battery is almost empty, the robot mower returns back to its charging station automatically.

Easily installed in your garden

The Kärcher RLM 4 can be put into operation in just a few steps: The robot lawn mower is started and stopped manually via a display and the mowing times are individually determined. One hand is enough to adjust the cutting height (between 25 and 55 mm). The special thing about this is that the cutting height is easily visible at all times because of an integrated magnifying glass.

Don’t give thieves a chance

The robot grass cutter is not only a professional lawn mower, but can also score points in terms of safety: Choose your personal PIN code and protect your robot lawn mower with the PIN code lock and alarm function.

The advantages of the Kärcher RLM 4 at a glance:

• Four-blade system (incl. broaching knife)
• Gradients up to ± 45 % possible
• Cutting width: 20 cm
• Cutting height adjustment with magnifying glass
• Collision, tilt, lift AND loop sensors
• Rain sensor
• Simple operation via display
• Theft protection (with individual PN code allocation)