Already Have A Security System?
Office and Home Monitoring
If you already have a residential or office security system, we offer alarm monitoring and service most major manufacturer’s security systems. Our security system technicians will come to your house or office and perform a detailed security assessment for residents in the Washington DC Metro area, as well as customers in Northern Virginia, and PG County and Montgomery County in Maryland . We will inspect your system, reprogram your system to our LOCAL central station, and give you 3 months of home or office monitoring at no charge.* Optionally, you can upgrade your existing security system to the latest technology by selecting one of our Security Components for your home. We are an authorized First Alert Professional and Honeywell security systems dealer.
Whether we were recommended by a neighbor, you’re unsatisfied with your current security service company, or you’re just looking for a new security service provider, Sentry Installation, Inc. can handle your security system needs. We’ve been in business since 1982 and have a long history of superior customer service.
For existing systems we offer:
Monitoring – Our local central monitoring station provides you with protection 24 hours a day, 7 days a week, 365 days a year. Their cutting edge central monitoring service makes sure your home or business is always protected.
Service – From time to time it may be necessary to service your security system. Sentry Installation, Inc. doesn’t just leave you alone after installation. We are always here to solve any service needs that may arise. We also offer service agreements which can become part of your monthly monitoring fee.
Tell us you saw us on the web and receive 3 months of free home monitoring!*
* Parts may be additional
Sentry Installation, Inc. offers its security system installation and repair services, as well as its office and home monitoring security systems, to residents in the Washington DC Metro area, in addition to customers in Northern Virginia, and Prince George’s County and Montgomery County in Maryland.