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KY-028 Digital Temperature Sensor Module

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

The KY-028 consist of a  of a NTC thermistor, a LM393 dual differential comparator a 3296W trimmer potentiometer, six resistors and two indicator LEDs. The board features an analog and a digital output.


  • Using the NTC thermistor sensor , good sensitivity 
  • The comparator output signal clean waveform is good , driving ability, than 15mA. 
  • Adjust the temperature distribution bit detection threshold 


Operating Voltage 3.3V to 5.5V
Temperature measurement range -55°C to 125°C [-67°F to 257°F]
Measurement Accuracy ±0.5°C
Board Dimensions 15mm x 36mm [0.6in x 1.4in]



  • 1 x KY-028 Digital Temperature Sensor Module

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