Established in 2009, Xiamen E-top Controls Technology Co., Ltd, has been focused in Room Thermostat Solutions for more than 15 years. With growing technology ability and in order to meet different customers’ request, E-top developed many models of OT compatible boiler thermostat. OpenTherm is a language that compatible thermostats and heating systems can use to talk to each other, enabling thermostats to control heating and domestic hot water systems. Generally speaking, OT thermostats always with Tuya WiFi module that you can operate the thermostat on smart cellphone.It’s also a kind of weekly programmable thermostats, with this kind of smart phone control thermostats you can increase the energy efficiency of a heating system whilst maintaining the desired set point temperature in the home. Here we introduce you several wireless thermostat & receiver with OT functions: