billion to acquire electronic security systems businesses from Cambridge Protection Industries.

Cambridge is a portfolio company of GTCR Golder Rauner and the businesses being purchased have annual revenues of about $500 million. The businesses, which include SecurityLink, provide services to approximately one million residential, commercial and government customers.

Dennis Kozlowski, Tyco's chairman and chief executive officer, said: "The addition of SecurityLink and the other Cambridge business lines continues our strategy of expanding our base of recurring revenues. Also, as with our existing ADT operations, we expect this business to generate healthy organic growth with attractive incremental margins.

"Looking at the near term, we expect the transaction will be immediately accretive to Tyco's earnings per share and free cash flow per share. The integration of the Cambridge businesses with ADT will provide product, service and operational synergies, which will result in ongoing positive benefits to Tyco shareholders.''