The Radiator Thermostat E1 offers a smarter and more comfortable heating control experience for your home, with advanced features like external temperature sensor readings, weather automation, and freezing protection, and is conveniently powered by 2 x AA batteries per thermostat (batteries included). The colorful backlit display, device grouping support, and easy installation make it a popular choice for most radiator valves. This bundle includes 2x Aqara Radiator Thermostat E1. A compatible Aqara Zigbee Hub is required for full functionality. Please check radiator compatibility before purchasing. 2x Radiator Thermostat E1