... while working Application: 1) In-car or on-boat devices series: military vehicle, police cars, medical ambulance, ships, traffic ... , scanner, digital camera and etc. 4) Kitchen utensils series: Micro-wave oven, induction cooker,refrigerator, and etc. 5) House appliance ... cleaner, AC, lighting lamps, and etc. 6) Power tool series: electric saw, drilling machine, punching machines, air compressors, and ...