Indicator light: a green one for the switch, a red one for power.
Built in a potentiometer for sensitivity control.
Onboard signal output indication, output effective signal is high, at the same time the indicator light up, the output signal can directly connect to microcontroller IO.
Can detect fire or wavelength in 760 ~ 1100 nm nano within the scope of the light source.
Detection angle about 60 degrees, the flame spectrum especially sensitive