A flame sensor is recommended to be interfaced with the driver circuit.
Operates as high-sensitivity UV sensor (flame detector) when used in conjunction with a UVtron R9454
Can detect an open flame of approximate size 25 mm (1 in) in length at 5 m (16.40 ft)
Accepts a wide range of input voltages from 12 V to 24 V
Internal noise reduction circuitry minimizes false positives