E18-D80NK Adjustable Infrared Sensor Switch | Infrared Proximity Sensor Switch

The E18-D80NK Adjustable Infrared Sensor Switch detects objects without contact using an infrared (IR) light source that emits invisible light and reads the reflected beam. The ir proximity sensor switch adjusts its sensing range from 3cm to 80cm using a small potentiometer (an adjustable resistor) built into the rear of the sensor barrel. It runs on 5V DC at 100mA current and outputs a digital LOW signal when an object is detected.

The proximity switch 3-80cm range uses an NPN open-collector output (an output circuit that pulls LOW when active and floats when idle). One non-obvious detail — an external pull-up resistor (typically 10K ohm) between the output wire and your supply voltage to read a clean signal on a microcontroller GPIO pin. Without it, the output floats unpredictably. The honest limitation is that the 80cm maximum range applies only to highly reflective white targets. Dark or matte surfaces reduce effective detection distance significantly.

The proximity sensor e18 d80nk connects to Arduino, ESP32, and PLC digital input pins through three wires: brown to positive, blue to GND, and black to GPIO with a pull-up. Robotics engineers and factory automation project makers use it regularly. To start, set the potentiometer to mid-range, connect the wires, and read the output pin. StemVolt provides this sensor tested with confirmed detection at 3cm to 80cm on a white surface target.

Related Products: 

• Check out the Digital Display Module For HC-SR04 Sensor

Features:

• Sensing range adjustable from 3cm to 80cm covers both close-range counting and longer proximity detection
• Operating voltage at 5V DC connects to Arduino and ESP32 boards without any additional voltage regulator
• Current consumption at 100mA requires a dedicated supply pin rather than drawing from Arduino 5V header
• mini adjustable infrared sensor switch NPN open-collector output requires a pull-up resistor for clean GPIO reading

Technical specifications:

Applications:

• Object counter uses this sensor to count bottles or parts passing on a conveyor belt at 20cm
• E18-D80NK Adjustable Infrared Sensor Switch detects bin fill level and triggers a relay at set distance
• Robotic arm end-effector uses this sensor to detect a part at 3cm and halt gripper movement safely

Package includes:

• 1 x E18-D80NK Adjustable Infrared Sensor Switch