Smart Sensor Trash Can Smart Switch DIY Material Kit

Specification Product name Smart TrashApplicable grades grades 3 6Product material environmentally friendly woodDifficulty Moderate difficulty exercise childrens hands on abilityworking principleThe smart trash bin that detects whether there is anyone in front of it by ultrasonic waves and automatically triggers the servo action calculates the distance between the trash can and the person or object in front of it by the time difference between the ultrasonic wave transmission and reception When a person in front is detected the servo action cover is opened and when the person leaves the cover is closed Note The cans color is in randam Package includes 1 x Smart Trash Kit