1. This set of intelligent wireless thermostats can extend your digital heating control to other rooms, and you can control these rooms independently via applications. 2. Flexible control Set the temperature of the radiator thermostat yourself or via the gateway through applications and voice commands. With the application, you can remotely control the intelligent radiator thermostat room by room or form a group to control it together. 3. The handy thermostat kit contains various adapters that can be installed vertically and horizontally on almost all radiators with thermostat radiator valves. 4. Only heat your home to the right temperature when you need it to save energy and energy costs. The window opening detection facilitates ventilation of your home. When the window or door is opened, the Alexa intelligent radiator thermostat automatically interrupts the heating to avoid energy waste. 5. Have you set the accuracy to 1? One that maximises comfort in your home. This intelligent radiator thermostat is suitable for all valves with the thread size M30 x 1.5 mm. Other functions include battery warning and temperature calibration; child lock; frost and limescale protection Product Name: Heater Valve Material: metal and plastic. Size: 9.4 x 5.5 cm. Weight: 200 g. Temperature sensor: NTC. Frequency: 2.4 GHz Connection: M30 x 1.5 mm. Maximum stroke: 6 mm. Battery: 2AA x LR6 (not included). Operating temperature: -10-40 Temperature range: 5-60 Temperature display: 0-60C. Constant temperature tolerance: 1C. Freezer protection: yes. Programmable: Yes List: 1 x heater valve. Features 1. App Remote Control 2. Voice control 3. Adjust the room temperature at regular intervals as needed 4. The function for family sharing. 5. Child safety function. 6. Special scenario to achieve different room trv control by group together.