Optex SL-650QDM Outdoor Quad Beam Detector

Product Description

The OPTEX SL-650QDM is an outdoor quad beam photoelectric detector designed for perimeter security applications. It uses four stacked infrared beams to detect intrusion attempts across an open boundary, significantly reducing false alarms caused by small animals, blowing debris, or single-beam interruptions. The quad beam configuration requires simultaneous interruption of multiple beams to trigger an alarm output, making it a reliable choice for high-security residential and commercial perimeter installations. Licensed security integrators and low-voltage alarm technicians are the primary installers of this type of device.

This detector is suited for outdoor perimeter protection along fence lines, driveways, property boundaries, and open areas where a defined detection zone is required. The quad beam design is commonly deployed in commercial facilities, correctional institutions, industrial sites, and high-value residential properties where nuisance alarm reduction is critical. It is typically installed in pairs, with a transmitter unit and a receiver unit mounted opposite each other to create the detection zone.

Key Features

• Quad beam infrared technology reduces false alarms compared to single or dual beam systems
• Designed for permanent outdoor perimeter security installations
• Transmitter and receiver configuration creates a defined detection boundary
• Suitable for both commercial and high-security residential applications
• Sold as an individual unit (each)

Compatibility

Designed as an OEM-style outdoor photoelectric beam detector for integration with standard security alarm control panels and access control systems that accept dry contact or supervised loop inputs.

Installation Notes

Installation should be performed by a licensed low-voltage security technician in accordance with local codes and NEC Article 725 requirements for low-voltage signaling circuits. Power down the associated alarm control panel or isolate the relevant zone before wiring the detector into the system. Transmitter and receiver units must be precisely aligned during installation to ensure reliable beam detection across the protected span. Consult the manufacturer product manual for mounting height, alignment procedures, and environmental clearance requirements specific to this model.