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    • Home  / Product Manuals & Documentation
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    SECO-LARM ENFORCER E-964-Q Series — Quad-Photobeam Outdoor Perimeter Detector Manual

    August 31, 2026 3 min read

    SECO-LARM ENFORCER E-964-Q Series Quad-Photobeam Detectors — long-range outdoor/indoor perimeter protection with 4 selectable beam frequencies.

    💾 Download Original PDF 🛒 View Product
    Full text manual (for reference)

    The SECO-LARM ENFORCER E-964-Q Series Quad-Photobeam Detectors are long-range outdoor/indoor perimeter protection sensors. Four selectable beam frequencies eliminate crosstalk when multiple units are installed nearby, and the sensor only triggers when all 4 beams are simultaneously broken — minimizing false alarms from animals, falling leaves, rain, snow, or fog.

    Models & Range

    Model Max Range (Outdoor) Max Range (Indoor)
    E-964-Q165Q 165 ft. (50m) 330 ft. (100m)
    E-964-Q330Q 330 ft. (100m) 660 ft. (200m)
    E-964-Q495Q 495 ft. (150m) 990 ft. (300m)
    E-964-Q660Q 660 ft. (200m) 1320 ft. (400m)

    Key Features

    • Four selectable beam frequencies to eliminate interference between multiple units for enhanced perimeter protection
    • Audible beam alignment buzzer and beam strength indicator (5 LEDs)
    • Environmental Output (selectable N.O./N.C.) — signals when degrading conditions (e.g. thickening fog) risk a false alarm
    • Built-in heater that automatically activates based on outside temperature
    • Built-in laser and viewfinder alignment system for quick, accurate mounting
    • Lensed optics reinforce beam strength and resist false alarms from rain, snow, and mist
    • IP-55 ingress protection, weatherproof for outdoor use
    • Delay time adjustable from 50ms to 700ms for site-specific sensitivity tuning

    Specifications

    Input voltage 12~24 VAC/VDC (non-polarity)
    Detection method All 4 beams simultaneously broken
    Selectable beam frequencies Four (4) channels
    Alarm output Form "C" relay COM/N.O./N.C., 1A @ 125VAC/24VDC
    Tamper output (Tx & Rx) NC switch, 1A @ 120VAC
    Environmental output Selectable N.O. or N.C., 1A @ 125VAC/24VDC
    Laser wavelength / output power 650nm / ≤5mW
    Alignment angle Horizontal: ±90° Vertical: ±15°
    Operating temperature -13°F ~ 131°F (-25°C ~ 55°C)
    Weight 5.7 lbs. (2.6kg)
    Ingress protection IP55
    Dimensions 15-1/4" x 4-7/16" x 4-11/32" (387 x 113 x 110mm)

    Installation Overview

    1. Choose a location with a clear line-of-sight between transmitter and receiver, away from trees/vegetation, standing water, and direct sunlight. Mount 32"-39" (80-100cm) above the ground for most situations.
    2. Run a shielded cable from the alarm control panel to the sensor (see the manual's cable-length table for AWG sizing by model and voltage).
    3. Wire the transmitter (wall or pole mount) and receiver per the wiring diagram — power, N.C./Com./N.O. alarm output, tamper output, and environmental output terminals.
    4. Set the beam channel selector DIP switches so transmitter and receiver are on the same channel (4 channels available to avoid interference between multiple units).
    5. Turn on the top and bottom lasers of both units. Adjust the transmitter's sensor vertically/horizontally until the red dot centers on the receiver and the receiver's signal LED turns off. Repeat for the receiver.
    6. Use the viewfinder on each unit to fine-tune alignment, then use the included template and beam-alignment buzzer/beam-strength indicator DIP switches to confirm alignment (buzzer stops sounding when aligned; indicator shows strong signal).
    7. For precise fine-tuning, measure output voltage with a multimeter at the voltage test points — see the Voltage Output table below.
    8. Set the delay time knob (50ms–700ms): shorter delay = higher sensitivity (catches fast movement, more false alarms); longer delay = lower sensitivity (fewer false alarms).
    9. Test by walking through the beams at various speeds and adjust the delay knob as needed. Do not connect power until installation is fully complete and double-checked.

    Voltage Output — Alignment Quality Reference

    Voltage Output <1.6V 1.6~2.0V 2.0~2.4V 2.4~2.8V 2.8~3.2V >3.2V
    Alignment Quality No Signal Bad Poor OK Good Strongest

    Multiple Sensor Applications

    Where more than one E-964-Q unit is installed nearby (long-distance series, two-layer/stacked, perimeter, or single-pair multi-layer configurations), assign each transmitter/receiver pair to a different channel (Ch1–Ch4) to avoid crosstalk between adjacent units.

    Troubleshooting

    Issue Solution
    Transmitter LED not lit Make sure the input power to the transmitter is 12 to 24 VAC/VDC.
    Receiver LED does not light when interrupted Check the input power to the receiver is 12 to 24 VAC/VDC.
    Beams interrupted and LED lights, but alarm doesn't trigger Check the continuity of the wiring from the receiver to the alarm.
    Signal LED continuously lit Clear obstacles between transmitter and receiver; clean the lenses of both units.
    Alarm trigger becomes erratic in bad weather Check overall system installation; realign the lenses.
    Frequent false alarm triggers Adjust the response (delay) time; change the location of transmitter and receiver.

    Warranty

    Warranted against defects in material and workmanship for three (3) years from the original consumer purchase date. SECO-LARM's obligation is limited to repair or replacement of defective parts if the unit is returned, transportation prepaid, to SECO-LARM. Void if damage is caused by acts of God, misuse, abuse, neglect, improper repair/alteration, or faulty installation.