Feature: 1. INTRUSION ALARM: When an intruder interrupts the beam, the infrared detector is triggered, providing reliable security performance. 2. INTELLIGENT DETECTION: The infrared sensor can distinguish small animals and reduce false alarms. 3. MULTI-FUNCTIONAL DESIGN: Features tamper resistance, anti-cut protection, and infrared interference prevention. 4. DURABLE CONSTRUCTION: Made from ABS and PC materials with high density, heat resistance, and strong UV resistance for long service life. 5. VERSATILE APPLICATION: Suitable for use in homes, villas, factories, residential areas, and schools to help prevent unauthorized access. Specification: Item Type: Infrared Beam Sensor Material: ABS, PC Voltage: AC12-18V / DC12-24V Detection Speed: 50-700ms Alignment Angle (Horizontal): ±90 degrees Package List: 1 x Transmitter 1 x Receiver 2 x Installation Accessories 4 x Screws 4 x Rubber Rings 1 x User Manual