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The OPTEX SL-200QDM is a quad beam photoelectric detector designed for perimeter detection applications. It uses four independent infrared beams stacked vertically to reduce false alarms and improve detection reliability compared to single- or dual-beam units. The quad beam design requires simultaneous interruption of multiple beams to trigger an alarm output, filtering out small animals, debris, and environmental interference. Licensed security integrators and alarm technicians are the primary installers of this device.
The SL-200QDM is suited for outdoor perimeter protection at commercial, industrial, and high-security residential sites. Typical installations include fence lines, gate openings, building perimeters, and access corridors where a reliable, low-false-alarm detection barrier is required. The advanced feature set supports demanding environments where standard dual-beam detectors may produce unacceptable nuisance alarm rates.
Designed as an OEM-style perimeter photoelectric beam detector for integration into professional security and access control systems. No specific compatible panel or system models were identified in the available product data.
Installation of photoelectric beam detectors should be performed by a licensed security technician familiar with perimeter intrusion detection systems. Before servicing or wiring, de-energize the circuit at the panel or power supply. Align transmitter and receiver units carefully according to the manufacturer manual to ensure consistent beam coverage. Local codes and the relevant sections of NFPA 731 or applicable security installation standards should be followed.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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