E18-D80NK IR Proximity Sensor Switch 3-80cm

The E18-D80NK Adjustable IR Sensor Proximity Switch is a diffuse-reflective photoelectric sensor that combines an infrared transmitter and receiver in a single compact housing, making it a popular choice for hobbyists and makers building robots, obstacle-avoidance systems, and automated counting setups. The sensor works by emitting modulated infrared light and detecting the reflection bounced back from a nearby object, giving it strong resistance to ambient light interference compared to simple IR modules. Its detection distance can be fine-tuned from 3cm up to 80cm using a multi-turn potentiometer on the back of the housing, allowing precise calibration for different projects and environments.

This proximity switch outputs a digital signal directly, going low when an object is detected and high when the path is clear, so it can be wired straight into a microcontroller’s digital input pin without any extra signal conditioning circuitry. It’s widely used in Arduino and Raspberry Pi robotics projects for obstacle avoidance, line-following enhancements, reverse parking sensors, industrial assembly line object counting, and interactive installations. The durable cylindrical metal body with waterproof-style construction and built-in LED indicator makes it easy to mount and monitor at a glance. With low power consumption, fast response time, and a simple three-wire connection, the E18-D80NK is a reliable, budget-friendly sensor for anyone getting started with proximity detection.

Specification:

• Model : E18-D80NK
• Supply Voltage : 5VDC
• Current Consumption : Less than 25mA
• Output Current : 100mA
• Detection Range : 3cm to 80cm, adjustable
• Output Type : NPN, digital (normally open)
• Response Time : Less than 2ms
• Sensing Angle : More than 15°
• Diameter : 18mm
• Sensor Length : 45mm
• Operating Temperature : -25°C to 55°C