MH Infrared Flame Sensor Module


This is a sensor you can use with Arduino to sense flame source (fire), or infrared light source from surrounding.

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SKU: MDU-SEN-MH-FLAME Category: Tags: , , , ,
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MH Sensor Series

This is an easy to use sensor module you can use to sense fire or infrared light source. A burning flame produces infrared light (range around 760 – 1100nm) and the photodiode in front of the module is sensitive to this type of wavelength. You can use this module to sense the intensity of infrared light too.? You can also use this module to receive infrared signal from remote controller. (Therefore if you point a remote controller to this sensor, it might cause false trigger :P)

Note : this sensor can works in both analog and digital mode. You can connect the analog output (AO) pin to Arduino to read the intensity of infrared light, or digital output (DO) to sense the threshold of infrared light intensity. Adjust the potentiometer (a.k.a. trimmer) to set the digital output (DO) sensitivity.

Specific Features

  • Comes with a photodiode that is sensitive to wavelength around 760 – 1100nm
  • Very sensitive when the photodiode is pointed to flame source.
  • Viewing angle : 60?
  • Output type : Analog and Digital


Common Features

  • Logical IC : LM393
  • Operating voltage : 3.3 – 5V
  • Output current : ?15 mA
  • Adjustable sensitivity via potentiometer
  • Comes with LED indicators for POWER and OUTPUT
  • Fixed bolt holes for easy installation



VCCPower sourceConnect to 3.3V or 5V of system
GNDGroundConnect to GND of system
DODigital OutputConnect to digital IO pin
AOAnalog OutputConnect to analog input pin


Files & Documentation

Additional information

Weight5 g
Dimensions32 × 14 × 10 mm