Alarmed Carrier and Protective Distribution System (PDS)

ShortPDS Alarmed Carrier a Physical Cyber Security System for Communication Infrastructure


  • Up to 4 conduits from one processor
  • Up to 1000ft/300m per conduit
  • Plug and Play Protected Distribution System
  • 24/7/365 monitoring for tampering – eliminates daily visual inspections
  • The sensor can be attached along the outside of the pipe/tray or threaded inside the pipe/tray.
  • No need for Dark Fibers
  • Fits any Communication Infrastructure
  • Connects to any standard alarm system
  • No Calibration or Software – Standalone
  • Uses Copper sensor cable added to the conduit
  • CNSSI 7003 Compliant

The Short Range Alarmed Carrier PDS is a physical cyber security solution for a protected and secured distribution system. The system allows to add an intrusion detection element to traditional conduits and cable trays.

The system excels at supporting the growing demand for connections to classified networks while offering cost savings, enhanced security, and the situational awareness required in today’s environment.

The system allows the user to monitor and protect any network infrastructure such as conduits, pipes, raceways, and cable trays.


Typical Alarmed Carrier PDS Applications Include:

  •  Short Range of up to 1000’/300m Point-to-point (e.g. trunk cable, building to building and room to room) and up to 4000’/1200m from a single point for 4 conduits/pipes.
  •  Encryption Alternative for short distances and gaps

With automated monitoring, the PDS enhances network security and lowers operational costs through the replacement of the often neglected, daily human visible inspection process required to secure a traditional secured distribution system. In some cases, PDS systems can be used along with a flexible interlocking armored cable infrastructure to eliminate all requirements for EMT or rigid metallic conduit systems, resulting in significant material cost savings.

While encryption is an effective method for the protection of information in a long haul network, an increasing number of government agencies are realizing the benefits of secured and alarmed PDS infrastructure and are using it instead or in conjunction with encryption. In some cases replacing existing encryptors save on costs and technical and maintenance issues.

System advantage

The system complements any alarm system, as well as integrates with a CCTV camera system.
The system is unique in its ability to protect most types of communication infrastructures.

  1. The sensor can be attached or threaded thru a communication conduit and cable raceway to detect any drilling, tapping, lifting or another method to reach the protected communication cables.
  2. Each processor can monitor up to 4 zones with 4 separate relay outputs per zone.
  3. The system is designed to connect to any alarm system /DVR/NVR/SCADA system.
  4. The sensor is ideal for installation on any pipe and tray, metal or plastic.
  5. The system utilizes 3 layers of false alarm filtration – Algorithm of detection based on the frequency of vibrations detecting only vibrations associated with intrusion, 22 levels of sensitivity easily adjusted with dip switches.

4 Zone Microcontroller Module (LPU-400).


Operating Power Requirements: 12 – 48VDC  500mA @ 12VDC


Lightning Protection: Gas Discharge Devices on all Inputs/Outputs & Communication line.


Alarm Outputs: Intrusion and Line monitoring output for each zone. Dry contact relays with N.O. and N.C. contacts rated 1A @ 12VDC. Alarm


Alarm Indicators:
Power Status LED.
Alarm Relay Status LED.
Tamper Indication LED.


Enclosure: NEMA 4x, IP-66


9.5″  x  7.5″  x  2.75” (24cm x 19.5cm x 7.0cm)
Weight: 2.2 lbs (1Kg)


Environment: Operating Temperature:  – 40°F to 176°F  (-40°C to 80°C)
Relative Humidity up to 98% non-condensing.


Sensor Cable & Accessories: Maximum length per zone: 1000ft (305m).
Diameter:  0.118” (3mm)
Color: Black

End Of Line Resistor card: Outdoor weatherproof Enclosure Box, 1M ohm.