Thermostatic valve is a device that automatically adjusts the mixing ratio of hot and cold water, so that the temperature of the mixed water can be automatically maintained at the set temperature. Most people know that TRV is used to control the temperature of the water flow in the radiator, and through the comparison of room temperature, the TRV is turned on and off in time. However, However, we tend to overlook the heat source, which is the boiler switch, which leads to unnecessary energy use. Therefore, E-top has developed such a solution; The TRV and receiver for controlling the boiler are linked via RF, all TRVs in the room are paired with the receiver to maintain linkage,if any TRV is calling for heating, the boiler will switch on, if all TRVs stop heating, the boiler will switch off.   At the same time, the user can decide whether the TRV is connected with the gateway and program the system of remote control of the mobile phone, means to make it become intelligent TRV.   E-TOP,  who focuses on providing customers with HVAC industry solutions.