Products · Exterior Security Devices
Exterior Security Devices
The most common is an exterior beam detector. It can be programmed to trigger sirens if the beam is broken in its coverage area.
OPTEX ProductsElectronic Beams
The most common is an exterior beam detector. It can be programmed to trigger sirens if the beam is broken in its coverage area.
OPTEX ProductsElectronic Beams
National Security, Inc.
10410 Main Street
Fairfax, Virginia 22030
VA: 703-273-5555
MD: 301-656-6466
Loudoun Co: 703-771-1000
Toll Free: 800-886-0886
Fax: 703-273-0885