SOS Alarms Inc. is a family business providing Residential/Commercial Fire and Burglar Alarm installation, service and inspections. We have been in operation for 38 years. Started by Sean O’Brien before his ‘sons’ were even toddlers, the sons continue the tradition of prompt, courteous service and quality work.

See us in action in our GALLERY of photos.


For the past 38 years we have and continue to primarily use NAPCO Security Products for residential and commercial burglar alarms because we feel they are a superior product.

We will service all other brands already in use.

See our list of ALARM SERVICES


To get the most out of your alarm system, we provide a U.L. Listed 24-hour monitoring service that can get you connected with your police and fire department as quickly as possible in times of emergency.

We work with Centra-larm of Manchester, NH. Remember to keep your password updated with them. Phone numbers for Centra-larm are 603.623.7930 or 800.639.4068 (Note: This is different from the passcode you use to control your entry/exit keypad. Please refer to your manual for settings.)


Keep your call list updated with us. This is a list of people we can contact should there be a problem at your home and you are not available. A blank PDF form is available on the CALL LIST page.