HETRA develops, certifies, and manufactures TEMPEST and Zone data processing equipment and specializes in electromagnetic engineering and COMSEC system design.

HETRA supplies NATO government users with a wide range of TEMPEST PCs and peripherals. HETRA is an Endorsed TEMPEST Test Facility and an Endorsed TEMPEST Manufacturer with products listed on the National Security Agency's Endorsed TEMPEST Products List (EPTL) and the NATO Recommended Products List (NRPL).

Information on HETRA's products that are procurable through NATO's NC3 Agency can be obtained through the BOA List.