E18-D80NK Adjustable 3–80cm Infrared Proximity Sensor Switch – Non-Contact Object Detection Sensor for Arduino, ESP32 & Automation

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he E18-D80NK Adjustable Infrared Proximity Sensor Switch is a compact, non-contact object detection sensor designed for robotics, industrial automation, obstacle detection, and DIY electronics projects. It uses infrared light to detect nearby objects and provides a digital switching output when an object enters the configured detection range.

With an adjustable sensing distance of approximately 3cm to 80cm, this sensor allows users to tune the detection range according to their application. Its integrated infrared transmitter, receiver, and detection circuitry make it convenient to use in automated systems that need to identify the presence of an object without physical contact.

The E18-D80NK is commonly used with microcontrollers such as Arduino and ESP32, as well as suitable control circuits, for building obstacle-avoiding robots, object counters, automatic switching systems, and smart automation projects.

Key Features

• Adjustable Detection Range: Approximately 3cm to 80cm.

• Infrared Detection: Detects objects without physical contact.

• Digital Switching Output: Provides an output signal for object detection.

• Adjustable Sensitivity: Detection distance can be tuned using the adjustment potentiometer.

• Integrated Sensor Design: Combines infrared sensing and detection circuitry in one unit.

• Non-Contact Operation: Helps reduce mechanical wear associated with contact switches.

• Easy Integration: Suitable for microcontroller-based and automation projects.

• Versatile Applications: Ideal for robotics, object detection, and automated control systems.

• Compact Cylindrical Housing: Convenient for mounting in custom enclosures and prototypes.

Technical Specifications

Important: Electrical specifications and output behavior can vary by manufacturer and module version. Confirm the actual supply voltage, output polarity, output current and wiring before connecting the sensor to your circuit. A 5V output should not be connected directly to a 3.3V-only GPIO unless the interface is confirmed safe.

Applications

The E18-D80NK Infrared Proximity Sensor is suitable for:

• Obstacle detection in mobile robots

• Arduino and ESP32 robotics projects

• Object presence detection on conveyor systems

• Automatic object counting systems

• Smart bins and automatic dispensers

• Contactless switching applications

• Industrial automation prototypes

• Product detection and positioning

• Automatic doors and access mechanisms

• DIY electronics and educational projects

How It Works

The sensor emits infrared light and monitors the reflected light received from an object. When an object is detected within the configured sensing range, the internal detection circuit changes the output state.

The built-in adjustment potentiometer allows the user to change the approximate detection distance. A connected controller can read the switching output and respond by activating a motor, relay, buzzer, indicator, or other control circuit.

Detection performance depends on the object's color, surface, size, angle, and surrounding lighting conditions. Dark or infrared-absorbing surfaces may reduce the effective detection range.

Compatible Development Boards

• Arduino UNO, Nano and Mega

• ESP32, ESP32-C3 and ESP32-S3

• ESP8266 / NodeMCU

• Raspberry Pi, using a suitable interface

• STM32 development boards

• PLCs and other compatible control systems

Package Includes

- 1 × E18-D80NK Adjustable Infrared Proximity Sensor Switch