The SECO-LARM E-9643-6S328DA is part of the newer long-range ENFORCER curtain barrier sensor family. It uses 6 beams to create a taller infrared detection curtain than a standard single photobeam, which is helpful when the job calls for coverage across a doorway, gate approach, window opening, fence top, or perimeter gap. Instead of watching only one beam line, it supervises a vertical zone and can be programmed for a single beam break or simultaneous break of two adjacent beams.
This style of sensor is commonly selected when an older SECO-LARM 25 ft IR curtain sensor is being replaced or when an access-control installer needs a stronger outdoor-rated curtain beam with longer range. The new 9-30 VDC platform, IP65 housing, tamper output, selectable relay, and sync/asynchronous operating modes make fitment more technical than a simple swap. Before ordering, compare the old model number, sensor height, mounting surface, wiring route, power source, relay logic, and whether the site uses synchronized wiring.
| Manufacturer | SECO-LARM / ENFORCER |
|---|---|
| Part Number | E-9643-6S328DA |
| Number of Beams | 6 |
| Operating Voltage | 9-30 VDC |
| Detection Method | Selectable single-beam break or simultaneous two adjacent beams |
| Beam Frequencies | 2 selectable frequencies |
| Range | Up to 328 ft synchronized; 33-262 ft asynchronous |
| Response Time | 40 ms or less |
| Outputs | Selectable NO/NC trigger relay and NC tamper output |
| Weather Rating | IP65 weatherproof |
| Material | Aluminum body with polycarbonate lens cover and end caps |
| Application | Vertical curtain-style perimeter detection |
| Dimensions | 43 in x 1-7/8 in x 1-9/16 in |
| Weight | 3 lb per pair approx. |
When replacing an older curtain sensor, do not assume the new body will land on the same holes or use the same wiring pattern. Check beam count, sensor height, sync wiring, relay logic, tamper wiring, and power supply before removing the original unit.
Photobeam and curtain sensors should be installed, aligned, and tested by a qualified gate, door, or access-control technician when used around moving gates, overhead doors, maglocks, or perimeter security circuits. Do not bypass monitored safety devices or rely on a non-monitored alarm beam as an entrapment protection device unless the operator manual specifically allows that setup.
The E-9643-6S328DA uses 6 independent photoelectric beams in a vertical curtain-style sensor pair.
It may be used as the newer related replacement direction for select older SECO-LARM IR curtain models, but dimensions, wiring, trigger mode, power, and mounting space must be checked before ordering.
Synchronized operation uses a sync connection and supports the longest listed range. Asynchronous operation can simplify wiring in some layouts but has a shorter listed range.
It is a curtain barrier detection sensor. Do not treat it as a monitored gate entrapment safety device unless the operator manual specifically supports that application.
The beam count and physical height change how much vertical coverage the sensor provides. Choose the beam count based on the opening height, target detection area, and mounting location.