Easy to install and can be used when attached to the wall Brightness sensor linkage on-off device, switch, light bulb, socket, motor, etc. to achieve smart home USB power supply, don't worry about running out of battery power. WiFi light sensor Power supply: Micro-Usb DC 5V1A Light range: 0-1000LUX Detection level: 1-3 Standby power consumption: less than equal 0.5W Detection component: photosensitive diode Wireless type: 2.4GHz Wireless protocol: IEEE802.11b/g Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:White Material:plastic Package Contents: 1 x Light Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.