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 the addition of 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 users 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 four conduits/pipes.
  •  Encryption Alternative for short distances and gaps

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

While encryption is an effective method for protecting 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 of or in conjunction with encryption. Replacing existing encryptors sometimes saves on costs and technical and maintenance issues.

System Advantages

The system complements any alarm system and 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 through 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 four 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 three layers of false alarm filtration – An algorithm of detection based on the frequency of vibrations detecting only vibrations associated with intrusion, Automatic live calibration, and 500 levels of sensitivity easily adjusted.


Operating Power Requirements:

  • 12 – 24VDC 300mA @ 12VDC

Lightning Protection:

  • 2 Layer Surge Protection
  • Gas discharge devices are on all inputs/outputs and communication lines.

Alarm Inputs

  • 2/4 IRONCLAD sensor cable inputs.
  • 4 Intrusion and Line monitoring for accessories like magnets, contact, microwaves, and motion detectors.
  • 1 Tamper switch.

Zone Status & Sensitivity Levels

  • 8x Arm/Disarm via Jumper
  • Twenty-two levels of sensitivity per zone on board.
  • 500 Levels of sensitivity via software
  • 1 Power Outage relay.

Communication to PC

  • USB-C Input
  • Optional RS485 or IP

Alarm Outputs

  • 8x Dry contact relays with contacts rated 1A @ 12VDC.
  • 1x Tamper switch relay
  • 1x Power Outage relay.


  • Sensor Input – 8x Screw terminal – Pair per zone.
  • Alarm Output – 8x Screw terminal – Pair per zone


  • Outer Diameter – 1/4 Inch (6mm).
  • Color: Metallic Silver


  • NEMA 4X, IP-66
  • 9.5 x 7.5 x 2.75” (24 x 19.5 x 7.0cm)
  • Weight: 2.2 lbs. (1Kg)


  • Operating Temperature: – 40° to 221°F (-40° to 105°C)
  • Relative Humidity up to 98% non-condensing.