ENGO E20i Wireless Smart Thermostat WiFi Boiler heating Controller White x2 two complete sets for zones. Each receiver has Wi-Fi built in, no hub needed

Smart Thermostats, Pack of 2: Control two heating zones from anywhere using the ENGO Smart app, or by voice with Amazon Alexa and Google Assistant Wireless Thermostats: The two ENGO E20i battery-powered thermostats (2 x AA each, white) connect wirelessly to their receivers over 868 MHz. Wall mount them, or put them on a shelf with their stands, away from heat sources and direct sunlight WiFi Thermostat: Reliable 2.4 GHz WiFi built into each receiver, so no extra gateway hub is needed. Your router must offer a 2.4 GHz network App Schedules: Set your heating schedules in the ENGO Smart app and share control with the family. If the internet drops, the thermostats still work from their buttons Works With Your Heating: Each black E20i receiver has a voltage-free relay (COM/NO, max load 16(5)A) for boilers and heat pumps with a volt-free thermostat input, pumps and valve actuators. Needs 230 V and a qualified installer Simple and Discreet: 80 x 80 mm thermostats with three buttons and a backlit display, in white. Key lock with optional PIN, TPI or hysteresis control, heating or cooling mode, 5 to 35°C Radiators or Underfloor: TPI settings for radiators, underfloor or electric heating, and each receiver can wire to a boiler, zone valve or wiring centre, which makes the E20i a good option for two zones or retrofit underfloor zones in one app