ABO-20L Active Infrared Beam Detector

The ABO-20L Active Infrared Beam Detector is a high-performance photoelectric motion sensor designed for security and automation applications. It consists of a transmitter (TX) and receiver (RX) that create an invisible infrared beam between them. When an object, person, or vehicle interrupts the beam, the sensor instantly triggers a signal — making it perfect for security alarms, gate systems, and perimeter protection.

Built for both indoor and outdoor environments, the ABO-20L offers up to 20 meters detection range, adjustable mounting, and stable performance even in sunlight, rain, or dust. It operates on 12V–24V DC, making it easy to integrate with most alarm and automation systems, including Arduino, IoT modules, and security control panels.

⚙️ Key Features & Highlights:

• 🔹 Dual Beam Infrared Detection – Reliable and precise detection with two IR beams.

• 📏 Long Detection Range – Up to 20 meters transmission distance.

• 🌧️ Weather Resistant Design – Works perfectly in outdoor environments.

• 🧠 Anti-Interference Circuit – Reduces false alarms from sunlight or artificial light.

• ⚙️ Adjustable Mounting Angle – Easy alignment between TX and RX units.

• 🔔 Alarm Output Trigger – Connects directly with alarm systems or microcontrollers.

• ⚡ Wide Voltage Input – Supports 12V–24V DC.

• 🔧 Durable Casing – Strong build for long-term operation in harsh environments.

• 🔒 Ideal for Security Systems – Suitable for homes, gates, and industrial setups.

⚙️ Technical Specifications:

⚙️ Working Principle:

The transmitter emits two parallel infrared beams continuously toward the receiver. Under normal conditions, the receiver detects both beams and keeps the circuit stable. When any object interrupts one or both beams (such as a person passing through), the receiver output changes state — triggering an alarm or control signal.

This design prevents false triggers from small insects or environmental changes. Dual-beam technology ensures reliable detection only when both beams are interrupted simultaneously.

⚙️ Applications & Use Cases:

• 🏠 Home Security Systems – Perimeter protection and entry detection.

• 🚪 Automatic Doors & Gates – Trigger opening or alarms when motion is detected.

• 🏭 Industrial Safety Systems – Detect obstacles and prevent unauthorized access.

• 🧠 IoT & Smart Home Projects – Integrate with Arduino or NodeMCU IoT modules.

• 🚗 Vehicle Detection Systems – Detect entry/exit in parking control systems.

• 🔒 Perimeter and Fence Alarms – Protect sensitive or restricted areas.

• 🏢 Access Control Systems – Link with electronic locks or sirens.

⚙️ Precautions & Installation Tips:

• ⚠️ Ensure TX and RX are properly aligned for best performance.

• ⚠️ Mount sensors at a height suitable for target detection (e.g., 0.8–1.2m for human detection).

• ⚠️ Avoid installing near reflective surfaces or direct sunlight exposure.

• ⚠️ Power the module with a stable 12V–24V DC supply.

• ⚠️ Regularly clean the sensor lenses to maintain detection accuracy.

▶️ YouTube Tutorial Video:

Watch: How to Install and Use ABO-20L Active Infrared Beam Sensor

🔹 Internal Links:

• 🔗 Arduino Boards

• 🔗 IoT Modules

• 🔗 Sensors & Modules

• 🔗 Security & Automation Components

🔹 Product Summary:

The ABO-20L Active Beam Infrared Barrier Detector provides reliable, long-distance motion detection using advanced photoelectric technology. Its dual-beam IR system, weatherproof design, and wide voltage range make it ideal for security, access control, and smart automation. Whether for residential, commercial, or industrial projects, the ABO-20L ensures precise and dependable protection.

Compatible with Arduino, Raspberry Pi, and automation systems, this module brings professional-grade sensing to your DIY or industrial setup.