View Press Release

FOR IMMEDIATE RELEASE

Advanced GSM Alarm Communicator

Offers Reliable Alarm Communications

Only major brand that provides full reporting from any Contact ID panel

Las Vegas, Nevada, Wednesday, March 28, 2007 – Tyco Fire & Security, a leading provider of intrusion security products worldwide, has introduced the GS3055-I GSM alarm communicator.

The GS3055-I provides customers with an opportunity to boost 2007 installation revenue as well as recurring revenue. Representing the evolution of alarm communications, the GS3055-I uses the GPRS data channel of the GSM network to ensure low-cost, faster and more reliable alarm communications.

The GS3055-I can serve as an effective primary or backup alarm communicator. It also provides an exceptional, dependable solution for installations that have converted to Voice over IP (VoIP). By February 2008, numerous customers are facing unsupported analog alarm communications as per a ruling by the U.S. Federal Communications Commission (FCC) regarding existing cellular AMPS.

DSC offers a dependable solution via the launch of the GS3055-I.

The GS3055-I GSM alarm communicator is the only major brand that provides full reporting from any Contact ID panel. It also reports directly to the monitoring station without the need of a clearing house.

CONNECT 24 is the digital service provider for the GS3055-I. CONNECT 24 administers accounts, handles billing and offers competitive rate plans for the service. For more information on CONNECT 24 services visit http://www.connect24.com/

The GS3055-I is available in the U.S. For more information on the GS3055-I GSM Alarm Communicator, visit http://www.dsc.com/.

-30-

Tyco Fire & Security - Intrusion Security Products

Tyco Fire & Security's Intrusion Security business unit, through its leading brands DSC, Sur-Gard and Bentel, provide security professionals with products of superior quality and performance in more than 140 countries worldwide. They include alarm control panels, keypads, user interfaces, detection devices, alarm communication products, structured wiring and industry-leading alarm monitoring technology.

About Tyco Fire & Security

Tyco Fire & Security, a segment of Tyco International Ltd., designs, manufactures, installs and services electronic security systems, fire protection, detection and suppression systems, sprinklers and fire extinguishers. With $11 billion in annual sales and more than 90,000 employees, Tyco Fire & Security's products and services are used to safeguard firefighters, prevent fires, deter thieves and protect people and property.