Thermostatic Radiator Valves (TR-01) sense the air temperature around them and regulate the flow of water through the radiator which they are fitted to. They do not control the boiler. They should be set at a level that gives you the room temperature you want. These settings may have to be different in each room, and you should set the TRVs to suit each room and then leave them to do their job. Turning a TRV to a higher setting will not make the room heat up any faster. How quickly the room heats up depends on the boiler size and setting, and the radiator size. Turning a TRV to a lower setting will result in the room being controlled at a lower temperature, and saves energy. TRVs need a free flow of air to sense the temperature so they must not be covered by curtains or blocked by furniture. Etop Thermostatic Radiator Valve Features: Thermostat operating voltage: 2 x AA1.5 V, alkaline batteries. Backup storage: EEPROM Frequency: 433/868Mhz Switching options: 7 days programming (4 periods/day) Temperature settings: 5°C ~ 35°C, in 0.5℃ Accuracy:± 0.5℃ Control: PID Thermostat dimensions:φ55*69mm            Color: White IP protection rating: 20. Certificate:CE, ROHS, RED   OEM, ODM is our main service. Help end user save energy but create them comfortable living temperature; Provide our customer solution to help you be more professional.  

Thermostatic radiator valves, also short for TRVs, adjust the hot water amount to achieve radiator heating temperature controller. Besides one central boiler heating system as the basic heat source, many homes also install 1-5pcs TRVs to create various room heating zones. Smart TRVs allows you to easily remote control the temperature of each radiator to adjust the room comfort. Smart wifi TRVs have to work with one gateway. It can be RF wireless gateway, tuya zigbee3.0 gateway or bluetooth gateway. Which protocol is more suitable for you? It depends on your required communication distance. TRV with 868mhz RF wireless gateway This TRVs can have longer communication distance, 100m in the open area. If you are applied in big space, RF wifi TRVs is more recommended and the price is more competitive.   TRV with tuya zigbee 3.0 gateway If you are using other tuya zigbee3.0 smart home appliances, you must use tuya zigbee3.0 TRVs.   TRV with bluetooth gateway   This has the shortest communication distance. When you are near the radiator, it can app control the TRVs.  

Thermostatic radiator valves, also short for TRVs, adjust the hot water amount to achieve radiator heating temperature controller. Besides one central boiler heating system as the basic heat source, many homes also install 1-5pcs TRVs to create various room heating zones. Smart TRVs allows you to easily remote control the temperature of each radiator to adjust the room comfort. Smart wifi TRVs have to work with one gateway. It can be RF wireless gateway, tuya zigbee3.0 gateway or bluetooth gateway. Which protocol is more suitable for you? It depends on your required communication distance.   TRV with 868mhz RF wireless gateway   This TRVs can have longer communication distance, 100m in the open area. If you are applied in big space, RF wifi TRVs is more recommended and the price is more competitive.   TRV with tuya zigbee 3.0 gateway   If you are using other tuya zigbee3.0 smart home appliances, you must use tuya zigbee3.0 TRVs.   TRV with bluetooth gateway   This has the shortest communication distance. When you are near the radiator, it can app control the TRVs.