--------------UPDATE STOK= 15-------------------- Usage: all kinds of flames, fire source detection module Features: 1, can detect a flame or wavelength in the range of 760 nm to 1100 nm light source, lighter flame test distance of 80cm, for the greater flame, the farther distance test 2, detection angle about 60 degrees, particularly sensitive to flame photometry 3 adjustable sensitivity (blue digital potentiometer adjustment) 4, the comparator output signal clean, good waveform, driving ability, more than 15mA 5, with adjustable precision potentiometers adjust the sensitivity 6, the working voltage 3.3V-5V 7, the output form: DO digital switching outputs (0 and 1) and AO analog voltage output 8, a fixing bolt hole, easy installation 9, small plates PCB Size: 3.2cm x 1.4cm 10, using a wide voltage LM393 comparator module for use: 1, the flame sensor flame most sensitive to ordinary light is also a reaction, usually used as fire alarm and other purposes. 2, a small plate output interface can be directly connected to the microcontroller IO port 3, the sensor and the flame to maintain a certain distance, so as not to damage the temperature sensor, the flame of a lighter test distance of 80cm, for the greater flame, the farther distance test 4, a small plate of analog output and AD conversion process, can achieve higher accuracy