The ENGO E25 smart thermostat starter pack is a Zigbee wireless system for room-by-room radiator heating control within the ENGO smart heating ecosystem. The pack contains the E25 battery thermostat, one ENGO smart radiator valve and the ENGO E-Gate Pro gateway, so app control and schedules are ready from day one.

The E25 thermostat measures the temperature in the room and sends heating setpoints wirelessly to the smart radiator valve, which opens and closes to regulate the radiator's heat output. The thermostat has two radios, ZigBee 3.0 (2.4 GHz) and a separate 868 MHz radio. One thermostat can control up to 6 ENGO smart radiator valves in the same room, so more valves can be added later.

Heating schedules, timers and smart automation are created in the ENGO Smart app through the included E-Gate Pro gateway. Schedules are set in the app, not on the thermostat. On the wall, three buttons (Up, OK, Down) let you change the temperature, and without a gateway the thermostat can also run on its own in day mode, with no schedule. With the gateway and the ENGO Smart app you can also use voice control with Alexa or Google Home.

The thermostat runs on 2 x AA batteries and needs no supply cables. The system is designed for ENGO smart heating products and is not compatible with other brands or generic Zigbee hubs.

In the box: E25 battery thermostat (with 2 x AA batteries), one ENGO smart radiator valve and the ENGO E-Gate Pro gateway.