Comcast Adds Home-Security Business in Expansion Beyond Cable TV

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Comcast Corp., the largest U.S. cable-television provider, is rolling out a home-security business as it seeks sales growth beyond TV services.

The Philadelphia-based company is starting Xfinity Home Security in seven markets for $39.95 a month. It lets users remotely adjust lights and thermostats, watch cameras, and get e-mail or text alerts when doors and windows are opened and closed. Customers can watch live video of their homes on an Xfinity website or with an Apple Inc. iPad application.