Yard Force Compact 400Ri - robot lawn mower - 2020 model - with free 5-year guarantee

Yard Force Compact 400Ri - robot lawn mower - 2020 model - with free 5-year guarantee
Including 5-year guarantee at myRobotcenter
£449.00 *

The Yard Force Compact 400Ri: Compact an also smart. 

The robot lawn mower for small gardens is full of technology. Its ultrasonic sensors ensure a save mowing on the property, detecting obstacles right in time to avoid collision. With many technical advantages, the Yard Force 400Ri can handle up to 400 mand a gradient of 30 %. The robot grass cutter can also be controlled comfortably via smartphone app, allowing the lawn to be mowed very comfortably. With the USB port of the Yard Force Compact 400Ri, upgrades can be easily carried out.

When you purchase the Yard Force Compact, you benefit from: 
✓ FREE 5-year guarantee (worth: £ 200.00)
✓ FREE delivery

£449.00 *


Availability: In stock

Only 32 left in stock
Delivery time: 3 to 5 working days
Express Shipping available

Payment options

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* Prices in GBP incl. VAT and delivery, if applicable



A lawn mower robot full of technical functions.


iRadar technology 

The iRadar technology and also the ultrasonic sensors help the Yard Force 400Ri to detect obstacles. By detecting the obstacles at a distance of about 0.2 to 2 m, it can dodge them early and avoid a collision. This is a big advantage when comparing this model with others because most robots only detect obstacles after a more or less soft collision. 


Controlling the Yard Force Compact 400Ri with an app

With the smartphone-app, the robot grass cutter can easily and comfortably be programmed. You can also adjust the settings of the Yard Force Compact and set the mowing times via app. The app is free of charge for Android and iOS and is also available in 13 languages.


Simple upgrades and diagnoses

The USB port makes it easy to upgrade the Yard Force Compact 400Ri. Diagnostics can also be made on the robot mower in a matter of seconds. Therefore, it is not necessary to send the robot in for an update, as was the case with many models in the past. 


Always “up-to-date”

The manufacturer provides corresponding firmware updates via download - these can be quickly installed on the Yard Force Compact 400i. Troubleshooting is just as easy thanks to the USB port on the robot lawn mower itself.


iRadar sensor

The models of the Compact series are equipped with an iRadar, a so-called ultrasonic sensor, thus offering maximum safety. This enables the robot mowers to detect obstacles at a distance of approximately 20 cm (minimum height 12 cm) and avoid collisions and possible injuries.


One app for all models

You can connect the Compact 400Ri lawnmower robot to a WLAN and control it conveniently via App. The app is now available for iOS and Android and is published in 13 languages. Many Yard Force models can be controlled using the "Mowap App"


The practical robot lawn mower for small gardens 


Perfect for 400 mand 30 % slopes

The compact robot lawn mower is suitable for gardens up to 400 m2. With the built-in 20 V / 2.0 Ah rechargeable battery, the Yard Force Compact can handle gradiants of up to 30 %. Even complex gardens are no problem for the robot grass cutter. 


Easy to handle with “One Click” 

The One Key Start and One Key Home modes make the robot mower very easy to use. So it is possible to start and park the robot with only one click. It can hardly get any easier!  


A healthy lawn through the mulch function of the Yard Force 400Ri

The height-adjustable (between 20-55 mm) blades and 16 cm cutting width allow the robot grass cutter to cut your lawn to the perfect height. The mulch that falls to the ground fertilizes the lawn and keeps it healthy.  


Installed in your garden in a short time

Before you can operate the robotic lawn mower, you need to install the boundary wire which serves as a border for the robot. The installation and start-up is particularly easy and can be carried out by yourself. The user guide will help you with it. Boundary wire, wire connectors and other accessories are included in the scope of delivery. 

Included in delivery

Included in delivery

Yard Force Compact 400i

• Charging station
• Boundary wire (100 m)
• Pegs (120 pcs.)
• Wire (9 m)
• Replacement blades ( 3 pcs.)
• Replacement screws ( 3 pcs.)
• Connectors (3 pcs.)
• Distance ruler
• Manual

Technical details

Technical details

Model description:Yard Force Compact 400Ri - 2020 model
Recommended up to (approx.):400 m²
Dimensions (approx.):44.0 x 38.4 x 20.6 cm
Weight (approx.):7.4 kg
Programming/controlling the app:Yes
Height of cut:20 - 55 mm in 3 steps
Cut width:16 cm
Incline:± 30 % (14°)
Mowing in the rain:optional (adjustable using rain sensor)
Mowing settings:Three rotating blades
Charging time (approx.):100 Min.
Rechargeable battery life (approx.):80 Min.
Guarantee on the product:5 years
Guarantee on the rechargeable battery:1 year
Type of rechargeable battery:Lithium-ion (20 V / 2.0 Ah)
Boundary:Boundary wire
Safety:Obstacle detection, lift and tilt sensors, pin code
Special features:

• App-control
• USB-interface for software-updates
• Radar-sensor for obstacle detection

Payment and delivery

Payment and delivery

Orders totalling over 100 GPB are delivered free of charge within United Kingdom. Orders totalling less than this are charged at 10 GBP per delivery.

Deliveries in United Kingdom will be made by DHL / Royal Mail or a haulage firm (from 31.5 kg) within 3 to 5 working days after the order is placed.

DHL Royal Mail DHL Express



DHL Express delivery option

During the checkout process, you will have the opportunity to select DHL Express. Orders which are placed untill 12.00 p.m. and are in stock, will be shipped on the same day. The additional fee depends on your delivery address and cart. 



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