Use this module to detect flame in large range >120 degree. If you want you robot detect if there is any fire around, this module is just for you. It detects the fire with 5 flame sensors which are arranged with 30 degrees. This module outputs analog signal, which would be more precisely, and also digital signal which would be more easy to use, you can adjust the digital output sensitivety by the on-board potentiometer.
The 5 LED indicators are helpful in your debugging, the high-precision resistors (1%) also makes this sensor more precise than other flame sensors.
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