5 Channel Flame Sensor Module is a 5 channel flame detector module used to detect flame in the larger area( >120 degrees). If you need a robot which should detect any fire around, then this module will be very useful for you. It detects the fire with  flame sensor which are arranged with 30 degrees. This module outputs analog signal, which would be more precise, and also digital signal which would be more easy to use, you can adjust the digital output sensitivity by the onboard potentiometer. The 5 LED indicators are helpful in your debugging, the high-precision resistors also make this sensor more precise than other flame sensors.