Double disc friction cycle alternately clean and transparent, imitating manual wiping, circular cleaning wheel imitating hand gestures, twisting the waist and hips to reach 70 revolutions per minute, twice the effort with half the effort when wiping the glass. Edge auto-sensing, when running to the edge of the glass, it stops advancing and folds back to continue working. Intelligent turn identifies obstacles and adjusts the path in real time to prevent collision. UPS power outage backup system, even if the home power outage, will not fall, accidental power outage can be adsorbed for 20 minutes and continue to alarm, and is equipped with a climbing safety rope lock, to provide protection for high-rise buildings. Cleans all kinds of dirt, dust, fine particles, grease, bird droppings, etc., Manufacturer: TRDEWR