Optex SL-350QDP Quad Photo Beam Detector

Product Description

The OPTEX SL-350QDP is a double modulation quad photo beam detector designed for perimeter security and access control applications. It uses four beams in a quad configuration to reduce false alarms caused by small animals, debris, or environmental interference. Double modulation technology increases detection reliability by requiring both modulation patterns to be interrupted before triggering an alarm. This unit is typically installed and commissioned by licensed security technicians or low-voltage electricians working on perimeter intrusion detection systems.

The SL-350QDP is suited for outdoor perimeter protection in residential, commercial, and light industrial settings. The quad beam arrangement provides layered coverage across a detection zone, making it appropriate for gate entries, fence lines, and building perimeters where a single-beam or dual-beam device would generate excessive nuisance alarms. It is sold as a single unit.

Key Features

• Quad beam configuration reduces false alarm rates compared to single or dual beam designs
• Double modulation detection technology improves signal integrity in outdoor environments
• Designed for perimeter intrusion detection in security system installations
• Single-unit packaging suitable for individual zone deployment

Compatibility

Designed as an OEM-style replacement or new-installation component for outdoor perimeter photo beam detection systems compatible with standard security control panels.

Installation Notes

Installation should be performed by a licensed low-voltage electrician or qualified security technician in accordance with local electrical codes and the manufacturer's product manual. Power down the associated security control panel before making any wiring connections. Align transmitter and receiver units carefully along the intended detection plane, following the beam spacing and mounting height guidance in the product documentation to ensure reliable zone coverage.