4 Pairs Infrared Break Beam Sensor Switch – High Precision Anti-Interference Module

Take your electronics and automation projects to the next level with this 4 Pairs Infrared Break Beam Sensor Switch. Engineered for accuracy and reliability, this compact 5mm (0.20") IR sensor module delivers consistent, interference-resistant detection — ideal for counting, object detection, security triggers, industrial automation, and DIY electronics builds.

Key Features

High Precision Detection: Signals are triggered only when an object completely interrupts the infrared beam, ensuring accurate, dependable readings every time.
Anti-Interference Technology: Built-in modulation and demodulation circuitry minimizes false triggers caused by ambient light or electrical noise, keeping your system running smoothly.
4-Pair Value Pack: Includes 4 transmitter/receiver pairs (8 sensors total), giving you everything you need for multiple sensing points or project redundancy.
Compact 5mm LED Form Factor: The 5mm (0.20") profile fits standard PCB layouts, breadboards, and enclosures with ease.
Wide Application Range: Perfect for counting systems, conveyor belt detection, door/gate triggers, robotics, security systems, and more.
Easy Integration: Designed to work right out of the box with standard microcontrollers (Arduino, Raspberry Pi, etc.) and electronics platforms.
Durable Construction: Red LED indicator housing for quick visual confirmation of operation status.

Specifications

Type: Infrared Break Beam Sensor Switch
LED Size: 5mm / 0.20"
Quantity: 4 Pairs (8 pcs total — 4 transmitters + 4 receivers)
Color: Red
Modulation: Built-in modulation/demodulation for anti-interference operation
Application: Counting, object detection, automation, security, robotics

Perfect For

Makers, hobbyists, and engineers building automation or detection systems
Industrial counting and monitoring applications
Security and access control triggers
Robotics and smart home DIY projects

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Frequently Asked Questions

Q: What is an infrared break beam sensor switch and how does it work?

A: An infrared break beam sensor switch consists of a paired transmitter and receiver. The transmitter emits a continuous infrared beam toward the receiver. When an object passes between them and breaks the beam, the sensor triggers a signal output. This 4-pair module uses built-in modulation and demodulation circuitry to filter out ambient interference, ensuring only a true beam break generates a trigger — making it highly reliable for counting and detection tasks.

Q: What microcontrollers or platforms are compatible with this sensor module?

A: These infrared break beam sensors are compatible with most common microcontroller platforms, including Arduino, Raspberry Pi, ESP8266, ESP32, and similar development boards. They integrate easily into standard breadboard or PCB layouts thanks to the compact 5mm LED form factor and standard pinouts.

Q: What are the best use cases for the 4 Pairs Infrared Break Beam Sensor Switch?

A: This sensor module is ideal for a wide range of applications including object counting on conveyor systems, door and gate open/close detection, security perimeter triggers, robotic obstacle sensing, attendance or traffic counting systems, and general-purpose automation projects requiring precise, interference-resistant detection.

Q: How many sensors are included in this pack?

A: The pack includes 4 pairs, meaning you receive 8 individual sensors total — 4 infrared transmitters and 4 infrared receivers — giving you everything needed for up to 4 independent sensing points or detection zones.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.