Light on automatically when sound is detected in the dark、when in daytime or under strong light、 circuit in the off state and the light does not turn onFeatures:1.High quality Energy Saving Auto Switch Controlled by Light and Sound2.Ideal Light Switch for use around bathroom、hallways、 staircases and porches3.Easy to install4.Base Type:E27Specifications:1..Working Voltage: AC100!#!amp!*!mdash;250V(50Hz\/60Hz)2.Light Sensitivity:5LUX!#!amp!*!plusmn;2LUX3.Sensitivity: 50db4.Delay Time: 20-30S5.Load Type:Control energy-saving lamps under 80W、incandescent under 60W、LED light under 30W6.Size: 86*86*mm7.Installation:Shut off the power、load must not short-circuit Package included:1 x Light sensor Switch2 x Screws