Alarm New England started out as Sonitrol Security Systems of Hartford in 1972. For the past 46 years, our professional alarm monitoring company based out of Rocky Hill, CT protects over 27,000 customers across Massachusetts, Connecticut, and Rhode Island, providing them with unparalleled protection and peace of mind. Our commitment to providing the latest technology and a stellar end-to-end customer experience has helped us make our communities safer places to live.