E18-D80NK Infrared Proximity Switch

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Component Electronic Sensors Switch

Internal Reference: SEN-011

E18-D80NK Infrared Proximity Switch

Arduino infrared proximity switch module is a reflection-type photoelectric sensor which integrates transmitting and receiving infrared beams. Infrared proximity switches work by sending out beams of invisible infrared light. A photodetector on the proximity switch detects any reflections of this light. These reflections allow infrared proximity switches to determine whether or not there is an object nearby.

Technical Specifications:

  • Voltage: DC 5V
  • Current: 100mA
  • Type: DC 3 Wire NPN-NO (Normal Open)
  • Sensory Distance: 3-80 cm adjustable
  • Sensory distance regulator and output indicator light on product back
  • Control signal level:
  • High:2.3V≤Vin≤5V
  • Low:-0.3V≤Vin≤1.5V


The table below showcases the pin configuration of the IR proximity sensor. It has 3 output wires, which are generally colour-coded with Red as VCC, Green as the ground, and Yellow being the Digital output.

Pin Type/Wire color Pin Description
VCC(Red) Voltage input(+5V)
GND(Green) Ground terminal
Digital pin(Yellow) Digital signal output

Note: The general colour coding of the wire may vary in the E18-D80NK IR sensor from different manufacturers or distributors. Kindly follow the suitable datasheet for connections.

Some other common color code is: Brown: VCC, Black: Output, Blue: Ground