1、[Working Principle] Inbuilt high accurate NTC temperature sensor, by comparing user setting data, output corresponding control signal in setting mode to control electric valve or fan. 2、[LCD Screen]Thermostat adopts LCD screen design, which allows you to see the temperature more intuitively, which is convenient for your operation. 3、[ABS Flame Retardant Material] The shell is made of PC and ABS flame retardant material, wear resistant and durable, and has a long service life. 4、[Product Function] Product functions include temperature detection, temperature compensation, user settings, fan settings, overheat protection, antifreeze, etc. 5、[Practical Button] Temperature Controller adopts button design, the button can be set to different working modes, which is convenient and practical to use.