Yard Force Compact 400Ri

Our Verdict: Smart features at a budget price. iRadar obstacle detection is a nice upgrade over basic bump sensors.

The Yard Force Compact 400Ri adds smart features to the budget category with iRadar ultrasonic obstacle detection and smartphone app control, features typically reserved for more expensive mowers.

Covering up to 400m², it’s designed for small suburban lawns where affordability and basic smart features are the priority. The ultrasonic sensors detect objects before impact, reducing collisions.

Small smart lawns Budget-conscious tech users Urban gardens First robot mower

Specifications

Coverage Up to 400m²
Battery Life 80 minutes
Cutting Height 20-55mm
Cutting Width 180mm
Slope Capability 30% (17°)
Navigation Boundary wire + iRadar ultrasonic
App Yard Force app (Wi-Fi)

Pros & Cons

A quick summary of where this model performs well and where it falls short.

Pros

  • iRadar ultrasonic obstacle detection
  • App control at a budget price
  • Affordable entry into smart mowing
  • Reliable boundary wire navigation

Cons

  • Small coverage area
  • Short battery life
  • Moderate slope capability
  • Basic build quality

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