E18-D80NK Adjustable Infrared Proximity Sensor – Diffuse Reflection Obstacle Avoidance Switch (3cm to 80cm)

Product Description The E18-D80NK is an industrial-grade, high-performance infrared proximity sensor designed for reliable obstacle avoidance and object detection. It combines an IR transmitter and receiver in a single cylindrical M18 housing, functioning on the principle of diffuse reflection. This sensor provides a digital NPN output that triggers whenever an object enters its detection field. Its most powerful feature is the integrated multi-turn potentiometer located at the rear, allowing users to precisely calibrate the sensing distance from 3cm up to 80cm. Durable, easy to mount, and highly resistant to ambient light interference, it is the standard choice for automated production lines, sumo robots, and intelligent car projects.

Key Features

• Adjustable Detection Range: Features a calibrated sensing distance of 3cm to 80cm, easily modified via the rear-mounted screw.

• Integrated IR Design: Houses both the infrared emitter and receiver in one compact unit for simplified wiring and installation.

• Rapid Response Time: Boasts a switching speed of less than 2ms, enabling high-speed object counting and fast robot maneuvering.

• Status Feedback: Equipped with a built-in red LED indicator on the back that illuminates instantly upon object detection.

• Robust M18 Housing: Built with high-impact plastic and standard M18 threading for secure industrial mounting.

Technical Details

• Output Configuration: Open-collector NPN Normally Open (NO) output; the signal line is pulled to Ground (Low) when an object is detected.

• Infrared Frequency: Operates on a modulated IR frequency to minimize false triggers from sunlight or indoor fluorescent lighting.

• Current Consumption: Draws approximately 25-30mA in standby and up to 100mA during active triggering.

• Voltage Tolerance: Optimized for 5V DC supply; performance may vary if the voltage drops below 4.5V.

• Wiring Color Code: Standard Brown (VCC +5V), Blue (GND 0V), and Black (Signal Output).

• Sensing Logic: The NPN output requires a pull-up resistor (typically 10k) to VCC if the microcontroller pin does not have internal pull-ups enabled.

• Environmental Sealing: The housing is designed to protect against dust and minor splashes, suitable for clean-room and light-industrial use.

• Mounting Accessories: Includes two M18 hex nuts for stable attachment to chassis or mounting brackets.

• Detection Beam: Provides a focused, directional beam that detects objects directly in front of the lens.

• Switching Frequency: High frequency switching allows the sensor to detect rapidly passing objects on conveyors.

• Operating Temperature: Maintains sensitivity and accuracy in temperatures ranging from -25°C to +55°C.

• Load Capacity: Can directly drive small relays or LEDs with a maximum current capacity of 100mA.

• Circuit Protection: Features internal protection against reverse polarity and temporary voltage spikes on the signal line.

• Precision Potentiometer: Multi-turn adjustment screw provides fine-grained control over the sensing threshold.

• Versatility: Effectively detects opaque objects, including cardboard, plastic, wood, and metal surfaces.