Announcement on Glass Break Detector Patent Litigation Settlement.

TUALATIN, Ore.--(BUSINESS WIRE)--July 22, 1999--

Sentrol, an SLC Technologies company, has agreed with C&K Systems, Inc. and C&K Components, Inc. to settle Sentrol's patent infringement claims against the C&K companies. In pleadings filed in 1998 in federal court in Portland, Oregon, Sentrol charged the C&K companies with infringement of Sentrol's patent on Dual Channel Glass Break Detectors (U.S. Patent No. 5,192,931).

C&K responded to the suit by filing a request asking the United States Parent and Trademark Office ("PTO") to reexamine the patent. The PTO reexamined the patent and ultimately confirmed the patentability of all ten claims and ruled that five new claims sought by Sentrol were patentable. Shortly after the parties received the PTO's Notice of Intent to Issue Reexamination Certificate, the parties reached an agreement to settle the lawsuit.

The settlement calls for the dismissal of Sentrol's infringement claims as well as C&K's contentions challenging the validity and enforceability of the patent. The remaining terms of the settlement are confidential. Sentrol is very pleased with the outcome of the litigation and the PTO's confirmation of the patentabiltiy of Sentrol's flex detection technology.

Sentrol is a world leader in the security and life safety market. The company designs and manufactures components for use by professional installers of security, alarm and life safety systems. These products include Sentrol magnetic contacts; glass break sensors and control panels; Sentrol and Aritech motion sensors; the ESL brand of smoke and CO detectors and fire alarm products; and the GBC brand of CCTV products. More information can be obtained by visiting Sentrol's web site at www.sentrol.com, or by fax-back request at 800/483-2495.