Adjustable from 2cm to 30cm via an onboard potentiometer.
The physical PCB board hosts several distinct elements designed to assist in calibration: distance with ir sensor fc-51 - Arduino Forum Fc 51 Ir Sensor Datasheet
: 4.5/5
When an object enters the detection range, the light reflects back to the photodiode. Adjustable from 2cm to 30cm via an onboard potentiometer
2cm to 30cm (adjustable via onboard potentiometer). Detection Angle: ~35°. Fc 51 Ir Sensor Datasheet