1 Vacuum, UV sterilize 2 LCD touch screen, remote control 3 Preset time, ... detect and avoid stair and obstacles;17. Healthy and Environmental: UV sterilization, HEPA fliter, prevent secondary pollution, make your house healthy and ... , durable, panel can be replaced, be closed to life. Robot Vacuum Cleaner Structure Introduction Factory View: Brand New Dry Vacuum Cleaner Intelligent Household