Switch 1-40W Intelligent Voice Control Sensor For Ceiling Light $ 4.55 Product information: Series: Sound Control Working voltage: 220 (V) Induction principle: sound control Sensing range: 5-8m Custom processing: Yes Output form: SCR Delay closing time: 45 seconds Scope of application: Ceiling lights, down lights, aisle lights Order number: Sound and light control switch Minimum number of packages: 500 Color: elegant white Specification size: length 38mmwidth 28mm Packing list: Voice control sensor X1