The NTC Thermistor temperature sensor module is a low-cost and small-sized module that is highly sensitive to ambient temperature. It is primarily used for detecting the temperature of the surrounding environment, and the temperature detection threshold can be adjusted through potentiometer settings. The module’s temperature detection range is between 20 and 80 degrees Celsius, making it ideal for controlling the water temperature and water tank. The DO output can be directly connected to the microcontroller, which allows for high and low temperature detection by detecting changes in the environment. For the most accurate thermistor measurement, the 4-wire method is recommended because there is no current flowing through either of the measurement cable wires, resulting in no added resistance due to the cable wires.