SECO-LARM ENFORCER E-931-S45RRGQ — 45ft Retro-Reflective Photoelectric Beam Sensor

Manual for the SECO-LARM ENFORCER E-931-S45RRGQ Retro-Reflective Photoelectric Beam Sensor with a 45-ft (14m) range. Commonly used as a safety sensor for garage doors and gates, an entry/overhead door security sensor, or an industrial automation object detector.

Features

• Range: 45 ft (14m)
• Weatherproof (IP66) construction for indoor/outdoor use
• Pre-wired 6-foot cord
• Bracket and mounting hardware included for both sensor and reflector
• Adjustable sensing range
• Compact size

Important: Conforms to UL325-2016 for gate operators that use a 10kΩ resistor for monitoring.

Caution: This sensor was not designed to prevent bodily injury or loss of life, nor for use in environments where explosive gases may be present. Use in certain security applications may be regulated by local laws — SECO-LARM is not responsible for legal compliance.

Specifications

Parts List

• 1x Transmitter/Receiver
• 1x Round Reflector
• 1x Reflector Hood for round/square reflector
• 1x Sensor Mounting Bracket (E-931ACC-BLS5Q)
• 1x Sensor Mounting Bracket (E-931ACC-BLS1Q)
• 1x 10KΩ resistor

Installation & Adjustment

1. Mount the reflector and sensor so they face each other.
2. Connect power to the sensor. Typically the red LED turns ON, indicating misalignment; the yellow LED (red OFF) indicates proper alignment (fine adjustment may still be needed).
3. Turn the sensing range knob to Max.
4. Slowly adjust the angle of the sensor and/or reflector up/down/left/right until the red LED turns OFF and the yellow LED turns ON — this is correct alignment. If both LEDs are OFF, the sensor is at the edge of range and may not work reliably.

Adjusting Sensing Range

After proper alignment, open the sensor's top cover. Starting from Max, slowly turn the sensitivity knob counter-clockwise until the red LED turns ON — this marks the weakest reliable point for the application. Turn clockwise slightly for margin; the ideal setting is the midpoint between the weakest point and Max. Close the cover securely to keep water out.

If the IR signal is too strong, the sensor may fail to trigger; too weak, and it may cause false alarms.

Testing

1. Power up — yellow LED should be ON, red LED OFF.
2. Pass an object between sensor and reflector — red LED should turn ON, yellow OFF, confirming detection.

Note: shiny/reflective objects near the IR beam path may not be detected reliably — reduce sensitivity (turn knob counter-clockwise) if this occurs.

Wiring

Maximum cable extension length: 325 ft (100m). The sensor may connect to either AC or DC voltage. If the gate motor's monitoring system requires it, connect the included 10kΩ resistor to the N.O. or N.C. output per the gate operator manufacturer's specifications. Note: the E-931-S45RRGQ will not work with gate operators that monitor via the "heartbeat" method or the N.C. method alone.

Troubleshooting

Optional Accessories

E-931ACC-R2Q (square reflector), E-931ACC-RC1Q (round reflector), E-931ACC-HR1Q (reflector hood), E-931ACC-BLR2Q (reflector bracket), E-931ACC-BLS1Q / BLS5Q (sensor brackets), E-931ACC-BLS7Q (wall bracket), E-931ACC-BLS8Q (door frame bracket), E-931ACC-BLS6Q (single-gang bracket).

Warranty

SECO-LARM warrants this product against defects in material and workmanship for 1 year from date of sale to the original customer, limited to repair or replacement (transportation prepaid to SECO-LARM). Void if damage results from acts of God, misuse, abuse, neglect, unauthorized repair/alteration, or faulty installation.