Flame Sensor Module – Arduino Compatible Great for fire alarms, can detect the flame/wavelength at 760 nm to 1100 nm range of the light source. The distance of the test flame lighter: is 80cm. The larger the flame is, the larger the distance test. The detection angle is 60 degrees, and the flame spectrum is especially sensitive with Adjustable sensitivity. Specification: Working voltage: 3.3v – 5v Detect range: 60 degrees Digital/Analog output On-board LM393 chip Features: High Photo Sensitivity Fast Response Time Sensitivity adjustable Range Up to 3 Feet Package Incluedes: 1x Flame Sensor Module – IR Infrared