Features:

• Compatible with Arduino
  
• Detection range of 2 - 20cm
  
• Detection angle of 35º
  
• Can be used for 3-5V power supply modules. When wired directly, the red indicator light will be on.
  
• Output port can be directly linked to the IO port of the projects micro-controller. A 5V relay can easily be achieved; pins (VCC, VCC, GND, GND, OUT and IO)
  
• Board size - 3.1 x 1.5cm
• The distance which the module can detect within the specified range can be adjusted through the use of a potentiometer

Pins and parts description:

• Vcc: 3.3 to 5 Vdc Supply Input
  
• Gnd: Ground Input
  
• Out: Output that goes low when obstacle is in range
  
• Power LED: Illuminates when power is applied
  
• Obstacle LED: Illuminates when obstacle is detected
  
• Distance Adjust pot.: Adjust detection distance (CCW decreases distance/CW increases distance).
  
• IR Emitter: Infrared emitter LED
  
• IR Receiver: Infrared receiver that receives signal transmitted by Infrared emitter.

Power and signal pins:

1. VCC: 3.3V-5V external voltage (can be directly connected to 5v and 3.3v MCU)
   
2. GND: GND External
   
3. OUT: small board digital output interface (0 and 1)