All thermostats do not work with all heating systems, this is a smart thermostat special designed for Electric heating system.(HT-07) They have an elegant design with a large square LCD screen , to ensure an excellent user experience of temperature control.      Environmental ABS material      Big LCD Display      Multiple modes control(Manual,Economy and PRG. Mode)      Electric heating system(Max 16A)      7 days Programmable (4periods/day)      Clock display      86*86*17 mm dimension      Frost protection & Over-heat protection      CE, ROHS approved      2.4G WIFI      External sensor supported

All thermostats do not work with all heating systems, this is a smart thermostat special designed for Electric heating system.(HT-07) They have an elegant,sleeker design with a large square LCD screen ensuring an excellent user experience of temperature control.      Environmental ABS material      Big LCD Display      Multiple modes control(Manual,Economy and PRG. Mode)      Electric heating system(Max 16A)      7 days Programmable (4periods/day)      Clock display      86*86*17 mm dimension      Frost protection & Over-heat protection      CE, ROHS approved      2.4G WIFI      External sensor supported