The module features a 3 wire interface with Vcc, GND and an OUTPUT pin on its tail. It works fine with 3.3 to 5V levels. Upon hindrance/reflectance, the output pin gives out a digital signal (a low-level signal). The onboard preset helps to fine tune the range of operation, effective distance range is 2cm to 80cm.
- There is an obstacle, the green indicator light on the circuit board
- Detection distance: 2 ~ 30cm
- Detection angle: 35 °
- Comparator chip: LM393
- 3mm screw holes for easy mounting