... , ROHS certificate 1 year warranty Ceiling mounted PIR sensor switch Description It works by infrared sensor. It has the ... , washroom and such public place. It is a new type smart switch. Features and functions 1. Use infrared ray sensor, do ... Power can not be overloaded). waterproof ceiling mounted PIR sensor switch Technical Parameters:working voltage: 175VAC~250VAC 50Hzload : incandescent lamp ...