National Security Systems



National Security Systemssecuring the nation one customer at a time.

Have an older Radionics Omegalarm security system? These Radionics security systems included the Omegalarm D8112 series, the Omegalarm D6112 and the Omegalarm D4112. On August 3, 1998 Radionics discontinued manufacturing the Omegalarm security systems. In our effort to provide the best possible support National Security Systems will continued to repair these alarm panels and keypads as long as parts are available. If you need a users guide for one of these security systems please see our support page.


National Security Systems
14791 Franklin Ave
Suite A

Tustin, CA 92780
(800) 457-1999






D8112 specifications

D6112 specifications

D4112 specifications




Fire Alarm Systems

Security Alarms

Access Control


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