Description

Ultrasonic Passageway Time Delay Switch As an electronic switching with the function of energy conservation, ultrasonic passageway time delay switch has no internal contact point, using ultrasonic range difference to control the electrical appliances’ opening and it will turn off after a certain delay time. Functions and Features: 1. Ultrasonic range to control: The lamp or other electrical appliances only will be on when there are persons walking near the switch. 2. Automation photometry: Using photosensitive to control, it will not turn on in the daytime when the light is strong. 3. Turn off automatically: It will turn off automatically after being on for several seconds to reduce energy waste. 4. Extend the useful life of electrical appliances. 5. Versatility: Widely used to all kinds of corridors, washrooms, balcony, basement parking garages, etc.