Working mode: This digital LED temperature controller module has 2 working modes, heating mode (start temperature lower than stop temperature) and cooling mode (start temperature higher than stop temperature).off), ranging from -58.0°F to 248.0°F;The high temperature control accuracy reaches 32.2°F. Stable and reliable: LED indicator can display the current output status;The digital display tube can display the measured temperature, the temperature measurement and control precision are high Waterproof is not easy to rust, easy to use, can be used for a long time Durable material: this XH - w3230 digital thermostat switch is made of ABS, ABS is one of the five most impact resistant synthetic resins, heat resistant and low temperature resistant Applicable: temperature controller module can be widely used in air conditioning system, incubator, equipment box, temperature control protection, etc.