Driven by industry demand for more reliable components, less expensive solutions, and niche requirements, Sigma Defense COMSEC Ancillaries ensure your security devices have reliable power and can mount into standard IT racks.

The AJ Power Source HRW PSU/UPS PG400 (CS HRW-P) is designed and produced by AJ Power Source, a leader in military/industrial rugged power supplies and UPS products, for customers seeking a HRW power supply for use within the Expeditionary Networking Kit or as a stand-alone device.

The COMSEC Uni-Shelf (CS Uni1) is the first and only COMSEC device shelf designed to support rigidly mounting multiple vendors COMSEC devices in a mix and match manner. The COMSEC Uni-Shelf is a 1U shelf, which features mounting points for many popular NSA certified COMSEC devices.

The CS Uni1 allows flexibility when configuring COMSEC rack space using an affordable and easy to use COMSEC device shelving product. Because the COMSEC Uni-Shelf’s innovative design allows you to mix and match devices, you will no longer need to inventory different shelves for different products. It includes all the necessary hardware (bolts & washers) required to retain the list of supported COMSEC devices. Why spend thousands of dollars per shelf
to simply mount your COMSEC equipment when the COMSEC Uni-Shelf offers unparalleled flexibility at a surprisingly low price?


The COMSEC Uni-Shelf (CS Uni2) iGov Variant is a unique shelving solution that rigidly mounts various Type 1 COMSEC devices and IAS IP networking appliances within a standard 2U IT rack space.

The CS Uni2 is easy to use and affordable, allowing complete flexibility when configuring rack space. Its flexible design supports the retention of several different vendors’ COMSEC products, IP networking appliances and the mixing and matching of various vendors’ products. This allows organizations to simply inventory a single shelf and use it for several products/applications.

All necessary hardware (bolts & washers) required to retain the list of supported devices is included.

A CS Uni2 Strapping Kit is also available (sold separately). It is used to retain first generation KG- 250s, KIV-7Ms, or KIV-19Ms (which all lack hard mounting points).

KG-175 Failover Adapter

The CS FO175 has been designed and developed specifically to meet the needs of users who require a high reliability power supply solution for the KG-175 family of HAIPE devices. Customers who implement the CS FO175 will have peace of mind knowing that their KG-175 A, B, D or G HAIPE device will remain powered and online in the event of a power supply failure. The CS FO175 uses two power supplies in a failover arrangement so if one of the two power supplies fails, the KG-175 device will remain powered by the second power supply. It does this instantaneously and automatically with no user interaction. The CS FO175 utilizes either the KG-175 OEM power supply or the highly reliable power supplies that we produce specifically for the KG-175 family and works with either the KG-175A, B, D, and G HAIPE devices.

COMSEC Replacement Power Supplies (CS PS)

We have developed replacement Power Supply Units (PSU) for the General Dynamics’ (GD) KG-175 product family of Type 1 HAIPE encryptors. PSUs are designed to ensure reliable power in tactical environments. We have fielded thousands of units

The optional quick release tray (CS QR) kit for General Dynamics’ KG-175D requires no tools and allows you to install and remove the unit quickly and easily. The QRT kit includes two trays (one right and one left) and hardware for mounting the two devices.