Seco-Larm LD-1123-PAQ Loop Detector Single Channel

Single-Channel Loop Detector for Vehicle Access Systems

The Seco-Larm LD-1123-PAQ Loop Detector is a single-channel vehicle detector designed for gates, doors, and traffic control systems. When a vehicle passes over the buried loop, the detector triggers a signal to open, hold, or indicate presence at an access point. With adjustable sensitivity, automatic drift compensation, and fault detection, it provides reliable performance in all environmental conditions.

Key Features

• Single loop input for simple and precise vehicle detection
• Three adjustable sensitivity settings for flexible installation
• Two Form “C” relay outputs for presence and pulse modes
• Automatic drift compensation for changing environmental conditions
• Auto fault detection with LED status indicators
• Power-on automatic reset ensures continuous reliability
• Weather-resistant ABS housing (IP54 rated)
• Harness 11-pin connector (sold separately)

Technical Specifications

• Model: LD-1123-PAQ
• Operating Voltage: 12–24 VAC/VDC
• Current Draw: 40mA standby, 50–60mA active
• Sensitivity Levels: High / Medium / Low
• Loop Inductance Range: 80–300 µH
• Reaction Time: 100ms
• Relay Outputs: 2 Form “C” relays
• Housing Material: ABS plastic
• IP Rating: IP54
• Operating Temperature: -40° to 149°F (-40° to 65°C)
• Dimensions: 2-15/16" x 1-7/16" x 3-5/16" (74 x 36 x 85 mm)

Conclusion

The Seco-Larm LD-1123-PAQ Loop Detector combines reliability, flexibility, and ease of installation for professional-grade vehicle detection. With automatic calibration, dual relay outputs, and weather-resistant construction, it delivers consistent performance across a wide range of perimeter access and gate control applications.