Features:  This gateway designed for the 801-WiFi and 802-WiFi thermostat temperature controller, as the reciver to realize remote control.  This is a device base on TCP/ IP ,which supported standard Ethernet port and able to connect thermostat to LAN or internet, user could easily use voice  remote control to operate thermostat via the connection of gateway.  Gateway connected to router via WiFi. The gateway has two modes: WiFi mode and hot point mode.  Can connect with 10pcs TRV thermostat at the same time.  This smart gateway should work with thermostatic radiator valve 801-WiFi (NOT included) / 802-WiFi (NOT included), please buy seperately    Specifications:  Color: White  Plug: EU  Power Source: DC 5.1V / 2A connection  IP Rating: IP21  Wireless Transmitting Range: Open distance 100M --- (If there is a wall partition, it will be reduced, and a wall will be reduced by about 25%)  WiFi Communication Protocol: TCP/IP, MQIT  WiFi Frequency: 2.412-2.484GHz  APP: TUYA SMART  APP Function: temperature setting, power on/off setting, program setting, multi-day program setting, etc.  Network Capacity: SASWG-04-WIFI (TY) can control up to 10 thermostats (optional models: 801-WiFi / 802-WiFi)  Package Size: 16.5*13.5*6cm / 6.5*5.3*2.4in  Package Weight: 284g / 10oz    Packing List:  1 * Gateway  1 * Adapter