ABO-20 Single Beam Infrared Detector – 20m Photoelectric Security Alarm Sensor

The ABO-20 Single Beam Infrared Detector is a photoelectric security sensor designed to detect movement or intrusion by monitoring an infrared beam between a transmitter and receiver.

With a detection distance of up to 20 meters, the ABO-20 provides a practical solution for perimeter protection, entrance monitoring, access control, and security alarm installations.

The detector features an IP55-rated weather-resistant housing, infrared beam interruption detection, and automatic sensitivity adjustment to help maintain reliable operation under different environmental conditions.

Suitable for indoor and sheltered outdoor applications, the ABO-20 can be integrated into compatible alarm and security systems.

Key Features

• 20m Detection Range: Infrared beam detection over distances of up to 20 meters under suitable conditions.
• Single Beam Detection: Detects objects or people interrupting the infrared beam between the transmitter and receiver.
• Transmitter and Receiver Design: Uses two separate units for infrared beam transmission and detection.
• Weather-Resistant Housing: IP55 protection against dust and water jets.
• Automatic Sensitivity Adjustment: Helps maintain detection performance under changing environmental conditions.
• Strong Light Resistance: Designed to reduce interference from sunlight and vehicle headlights.
• Digital Filtering Circuit: Helps minimize false alarms caused by environmental interference.
• Compact Design: Suitable for installation on walls, gates, fences, and access points.
• Security System Integration: Designed for use with compatible alarm and monitoring systems.

Technical Specifications

Working Principle

The ABO-20 operates using an infrared transmitter and receiver positioned opposite each other.

1. Infrared Transmission: The transmitter continuously emits a modulated infrared beam toward the receiver.
2. Normal Operation: The receiver detects the infrared signal when the beam path is clear.
3. Beam Interruption: When a person or object blocks the infrared beam, the receiver detects the interruption.
4. Alarm Activation: The receiver can trigger a compatible security system through its alarm output.

Proper alignment between the transmitter and receiver is essential for reliable detection.

Applications

• Home and Building Security Systems
• Entrance and Exit Monitoring
• Perimeter Intrusion Detection
• Gate and Fence Protection
• Warehouse Security
• Parking Area Monitoring
• Office and Commercial Building Security
• Access Control Systems
• Industrial Area Monitoring

Installation Guidelines

1. Install the transmitter and receiver facing each other.
2. Maintain a clear line of sight between both units.
3. Connect the required 12V DC power supply.
4. Connect the receiver's alarm output to a compatible alarm controller.
5. Adjust the alignment to achieve reliable beam reception.
6. Test the detector by interrupting the beam at different positions.

Important Notes

• Power Supply: Requires a regulated 12V DC power source.
• Detection Range: The maximum specified distance is 20 meters under suitable installation and environmental conditions.
• Weather Conditions: Heavy rain, fog, snow, or dust may significantly reduce the effective detection range.
• IP55 Protection: Weather-resistant but not designed for immersion in water.
• Alignment: Accurate positioning of the transmitter and receiver is necessary for stable operation.
• Alarm Output: Verify the receiver's output terminals and electrical ratings before connecting to a security controller.
• Microcontroller Compatibility: Connection to Arduino, ESP32, or Raspberry Pi may be possible through a suitable interface, depending on the receiver's alarm output configuration.

Package Includes

• 1 × ABO-20 Infrared Transmitter
• 1 × ABO-20 Infrared Receiver