Input Voltage:AC 85-250V 50/60Hz Max Current:5A x 2 Standby Power:0.5W Wireless Range:45M Wireless Frequency:2.4GHz Wireless Standard:IEEE 802.11b/g Working Temperature:0 - 60 (32F-140F) Working Humidity:1% - 85%RH(non-condensing) NOTE: Now this matter relay only support and Tuya app, not support google home, , alexa ! And not support external switch! Note for using APP: Please make sure the IOS system of the mobile is above 16.1; A smart home hub must be set(eg: Home*Pod,Home*pod Mini,A*pple TV or i*Pad),then the Matter devices can be added into "Home"App. The configured Wi-Fi must be on the local Area Network (LAN) with the hub; Please open Bluetooth before adding Colour:White Material:Plastic Size:54mm x 42mm x 23mm Package Contents: 1 * Tuya Smart Relay Switch 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.