Perimeter Intrusion Detection and Physical Data Security

Fiber SenSys®, Inc., (FSI) is the market-leading manufacturer of fiber-optic intrusion detection systems for outdoor perimeters and physical data networks. FSI sensors have been successfully deployed on fences and alongside physical data networks at the most critical sites in the world.

Our Fiber-Optic security solutions are resistant to environmental effects (EMI, RFI, wind, extreme temperatures, corrosion, lightning and other weather-related conditions).

Explore the Fiber SenSys comprehensive family of Perimeter and Physical Data security solutions.

Fence-Mounted Sensors
The Fiber Defender® Family – Perimeter Intrusion Detection
All Fiber Defender® Alarm Processor Units (APUs) are CE/RoHS compliant and made in the USA. Wind/noise and calibration software included with all APUs. All Fiber Defender® sensor cables are immune to EMI, RFI, and lightning.
Our portfolio of outdoor security sensors provides solutions for all types of perimeters. Using both fiber optic and radar technology, Fiber SenSys provides the best solution.

Fiber Defender® 300 Series
Fiber Defender® 500 Series
Fiber Defender® FD7104™


Alarm Indicator