Intelligent app driven solution for your dream lawn!

Compact 400Ri

The Yard Force Compact 400Ri Robotic Lawnmower is the perfect solution for keeping your lawn in top shape all year round. Fully automated lawncare at the touch of a button, the i-Radar technology allows the machine to move effortlessly around your lawn while avoiding obstacles.

  • App Control
  • Ideal for gardens up to 400m²
  • i-Radar – Active Safety Ultrasonic Sensor technology
  • Rain sensor
  • Tackles inclines of up to 30%


2 (+1) Years Warranty

28 Days Free Returns

21 in stock

Easy Installation

The set up process couldn't be simpler, with straight forward instructions and an easy to program control panel, installation is on average 45 minutes depending on your garden size and shape.

App control

Manage your lawn from any location with the easy to operate CloudHawk App. Adjust the working schedule, change cutting zones and send back to charge all from the convenience of your phone.


This advanced technology provides peace of mind by allowing the robot to move freely around your lawn. The iRadar ultrasonic sensors detect obstacles up to 60cm, and will change route before a collision.

Product Features

Brushless Motor

Auto Stop Sensors

Rain Sensor

16cm Cutting Width

30% Slope Capacity

Additional Features
  • 400m2 working area suitable for city gardens
  • i-Radar – Active Safety Ultrasonic Sensor technology, the most advanced feature in robotic mowing
  • App control – intelligent technology enables control from any location
  • Brushless Motor with 20V Lithium-Ion Samsung battery and 16cm cutting width
  • Variable cutting height adjustment, ranging from 20-55mm
  • Rain sensor enables Compact 400Ri to go back to the charging station automatically
  • Additional protection with built-in sensors: lift, obstacle, turnover, tilt
  • Tackles incline of up to 30%
  • It can mow day and night, thanks to its quiet operation
Product Specifications
Article Number Compact 400Ri
Battery Capacity 2.0Ah
Power 20V
Garden size 400m²
Cutting Width 16cm
Cutting Heights Variable
Cutting Height Range 20mm-55mm
Cutting System 3 x Steel Blades
Charge Time 100min
Run Time 60min
Dimensions 440 x 384 x 206cm
Weight 7.4kg
Accessories 100m boundary wire, 120 wire pegs, 3 fixing pins, 3 spare cutting blades, 9m charging cable
Slope 30%
Sensors lift, obstacle, turnover, tilt, rain, radar
Advanced Performance WiFi, App, PIN code
Product Manual
What's in the box
  • 1 x Compact 400Ri Robotic Lawnmower
  • 1 x Charging Station
  • 1 x 100 m Boundary Wire
  • 120 x Boundary Pegs
  • 1 x 9 m Extend Cable
  • 3 x Spare Blades
  • 3 x Blade Screws
  • 3 x Boundary Wire Connectors
  • 1x Spacer Ruler
  • 1 x Instruction Manual
Delivery & Returns

With a 2 year warranty (extending to 3 years on registration) and a support team behind you, you’ll have years of hassle free mowing.

Customer Reviews