Generic 4PIN NTC Thermistor Temperature Sensor Module - Digital/Analog Output

The module is designed to operate from 3.3V to 5V DC, making it directly compatible with common development boards like Arduino (5V logic) and Raspberry Pi or ESP32 (3.3V logic) without requiring an external level shifter.

The module provides two separate outputs. The analog output pin gives a variable voltage corresponding to the sensed temperature, which can be read by an MCU's ADC pin. The digital output pin provides a clean high/low signal (0 or 1) that triggers when the temperature crosses the threshold set by the onboard potentiometer.

Adjust the onboard blue potentiometer with a small screwdriver while monitoring the temperature with a reference thermometer. The digital output will switch state (high to low or vice-versa) when the ambient temperature crosses the set threshold. The analog output remains linear and is unaffected by this adjustment.

Yes, the onboard NTC thermistor can be replaced with a remote, sealed NTC probe using the same resistance characteristics for applications like monitoring water temperature in tanks or aquariums, allowing for more flexible installation.