User Advantages: Automatic Cleaning: Two automatic operation modes (random and pattern). Bell and flashing light to make nearby workers aware of its presence. Cleaning Area Setting Function: Enables the user to define the cleaning area by placing a boundary strip on the floor as a border line that the cleaner cannot pass. Obstacle Detection: Ultrasonic sensor and bumper sensor, Two selectable dust collection modes: Vacuum cleaner plus brush for small and large debris. Electric brush only for collecting large debris. Slope sensor and wireless remote control, Carrying handle for easy transport, 2 × electric brush × side brush, Battery fuel gauge, Brushless motor, LED warning light for filter maintenance, Powered by two 18V lithium-ion batteries in parallel, Operation Timer: Allows automatic start in 1, 3, or 5 hours