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.