Here is another smart robotic mower that cuts lawns up to 400m2 without you having to break a sweat. The Yard Force Compact 400RiS Robotic Mower is powered by a brushless motor with 20V Lithium-ion battery. It has variable cutting height from 20 to 55mm. It comes with lift, obstacle, turnover, tilt & rain sensors for safe operation.
This robot features iRadar active safety ultrasonic technology. It has a convenient control panel on top. You can find out more about it here.