Package Includes: 1 x IR Infrared Obstacle Avoidance Sensor Module
 
Features:
Separate analog and digital output pins
A preset knob to fine-tune distance range
Detection distance: 2 ~ 30cm
Detection angle: 35 °
Comparator chip: LM393
screw holes for easy mounting
Small board PCB size: 3.2cm * 1.5cm
IR Infrared Obstacle Avoidance Sensor Module has a pair of infrared transmitting and receiving tubes. When the transmitted light waves are reflected back, the reflected IR waves will be received by the receiver tube. The onboard comparator circuitry does the processing and signal becomes available at the two outputs.
The module features a 4 wire interface with Vcc, GND, a digital OUTPUT pin and an analog output pin on its tail. It works fine with 3v3 to 5V levels.
 
Bullet points:
Detection distance: 2 ~ 30cm
Separate analog and digital output pins
There is an obstacle, the indicator light on the circuit board
Preset knob to fine-tune distance range