Digital Temperature Module KY-028

SKU: FA3027 Tag:
Dimensions 3.5 × 1.5 × 2 cm
Operating Voltage

3.3V ~ 5.5V

Temperature Measurement Range

-55°C to 125°C [-67°F to 257°F]

Measurement Accuracy


The KY-028 Digital Temperature Sensor measures temperature changes based on thermistor resistance. This module has both digital and analog outputs, there’s a potentiometer to adjust the detection threshold on the digital interface.

This module consists of an NTC thermistor, an LM393 dual differential comparator, a 3296W trimmer potentiometer, 6 resistors, 2 LEDs, and 4 male header pins. The module features analog and digital outputs.

Compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers.


Connect the board’s analog output (A0) to pin A0 on the Arduino and the digital output (D0) to pin 3.

Connect the power line (+) and ground (G) to 5V and GND respectively.

KY-028 Arduino
A0 Pin A0
+ +5V
D0 Pin 2