APP Remote Control: Control your devicess anytime , anywhere with the Tuya/Smart Life app No / OFF Physical keys: Physical button With LED indicator light flashing , indicating that it can be connected to the mobile phone. Voice Control:After Zigbee smart devices connect to the gateway, support voice control via Alexa and Google Home. Timing: Smart schedule timer, Based on your daily schedule , Power saving eliminate wasteful standby power Materials Analysis: Superior materials , superior quality , safe and reliable:PC material fire retardant Sharing and Grouping: You can share your connection device to your family up to 10.In the Tuya/Smart life APP , you can combine devices together for unified control with one single tap on your smartphone. you can easily combine living room bulbs , plugs and switches together for more convenient access. Product name: Zigbee Smart Gateway Working humidity:Less than 90% Zigbee standard:IEEE802.15.4 Standard communication protocol: Zigbee 3.0 Number of mounts:128 Device adding speed:21s Mobile Remote Control Timing Countdown ON / OFF Physical Key Sharing Safety High temperature flame retardant Colour:White Material:PC Size:about 90 x 23.5mm Package Contents: 1 x gateway, 3 x screws, 3 x expansion bolts, 1 x network cable, 1 x USB cable, 1 x mounting bracket, 1 x English manual Only the above package content, other products are not included. Note: Light shooting 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.