Features: _x000D_ Can detect a flame or the light of 760~ 1100nm wavelength, lighter flame test distance of 80cm, for the greater flame, the farther the distance test. _x000D_ The detection angle is about 60 degrees, particularly sensitive to the flame spectrum. _x000D_ Sensitivity is adjustable (shown in blue digital potentiometer adjustment). _x000D_ Comparator output, signal clean, good waveform, strong driving ability, more than 15mA. _x000D_ With adjustable precision potentiometer for sensitivity adjustment. _x000D_ With fixed bolt holes for easy installation. _x000D_ _x000D_ _x000D_ Specifications:_x000D_ _x000D_ The working voltage: 3.3V-5V_x000D_ The output format: DO digital switching outputs (0 and 1) and AO analog voltage output _x000D_ Comparator: wide voltage LM393 _x000D_ Length: 4.5cm / 1.77in _x000D_ Weight: 4g _x000D_ _x000D_ _x000D_ Wiring instructions: _x000D_ Product wiring description:_x000D_ VCC: 3.3-5V power supply "+"_x000D_ GND: power supply "-"_x000D_ DO: TTL switch signal output._x000D_ AO: analog signal output (voltage signal) _x000D_ _x000D_ _x000D_ Instructions for use:_x000D_ 1. the flame sensor is most sensitive to flame, for ordinary light, it is also responsive _x000D_ , generally used as a flame alarm purposes._x000D_ 2. the output interface can be directly connected to the micro-controller IO port._x000D_ 3. The sensor must be kept at a distance from the flame to avoid damage to the sensor. _x000D_ lighter flame test distance of 80cm, for the greater flame, the farther the distance test _x000D_ 4. Analog output and the AD conversion process, can achieve higher accuracy_x000D_ 5. When the sensor detects a flame, sunlight, or infrared light, if achieve potentiometer setting threshold, the green indicator light will ON, the DO output low level (0-0.1 - V), the green light is OFF, the DO output about 3 V high voltage level_x000D_ _x000D_ _x000D_ _x000D_ Package included: _x000D_ 5 x IR Flame Sensor Module