The ENGO Controls E25 230 V wired smart thermostat is a Zigbee wireless room thermostat designed for permanent wall-mounted installations within the ENGO smart heating system. It combines mains powered reliability with wireless Zigbee communication for stable and accurate heating control. The thermostat can be used in two different heating applications: Underfloor Heating Control:When paired with an ENGO control box, the E25 thermostat controls individual underfloor heating zones. Each thermostat measures room temperature and sends heating demand wirelessly. The control box then operates the thermal actuators on the underfloor heating manifold, providing accurate zone control across the property. Radiator Heating Control:When paired with ENGO smart radiator valves, such as ETRV-M30, the thermostat controls radiator heating by sending temperature setpoints wirelessly. The smart radiator valves physically open and close to regulate heat output. One thermostat can control multiple smart radiator valves within the same room. Programming and smart control:The E25 thermostat does not allow programming directly on the device. All heating schedules, timers, and smart automation are created using the ENGO mobile app, which requires the ENGO E-Gate Pro Zigbee gateway. Manual temperature adjustment is available on the thermostat itself. Powered by 230 V AC, this version is ideal for replacing traditional wired room thermostats while upgrading to smart heating control within the ENGO ecosystem. This product is not universal and is not compatible with other brands or generic Zigbee hubs.