Security Systems & Services in Cambridge, MA

Comprehensive list of Cambridge, Massachusetts based companies offering installation, maintenance and repair of home and business security systems, CCTV & burglar alarms, guard and video surveillance services.

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At SimpliSafe Alarm Systems we provide wireless, cellular, DIY security systems across the US.


We're dedicated to helping people live fully and safely. We want to assist you embrace city living while making smart lifestyle decisions and being proactive about safety. We began SimpliSafe because we love living in cities. We want to enjoy all the city has to provide, but we want to feel complete peace of mind in our urban home.


Crimes of all kind are increasing at an alarming rate. Don't be vulnerable to robbery, pilferage or arson. We specialize in delivering uniformed guards who will be a responsible presence as well as an effective deterrent to internal or external breaches of security.



Certain situations call for discreet, specialized services. Corporate Resources Group supports such situations by applying principles of threat management and protective methodologies to advise, protect and supply for our diverse clientele.


New Englands formost leader in integrated security solutions. Boston leader in electronic trunstile applications from Gunnebo, Smarter, and other leading manufacturers. Spectrum boasts top tier product solution for card access and CCTV from manufacturers such as AMAG, Verint, OnSSi, Pelco, Sony, Panasonic and others. Spectrum specializes in Boston's towers and campuses. All work performed by technicians


A staff of locksmith specialists regularly delivering 24hr locksmith services and security system installation right at your doorstep. If you're locked out or your car keys are lost, we can get you in - and keep you safe and secure. With our emergency locksmith specialists across the US ready 24 hours a day, Boston Locksmith Services can supply aid with utmost expediency.

  • I called them to install a deadbolt lock on my front door and I was amazed to saw that

Since 1974, Aetna Fire Alarm has been serving the life safety requirements of businesses through the Boston area. Our experience enables us to supply quality service in a timely and professional manner. Our system technicians are readily available to supply prompt, courteous support on a 24hr seven days a week basis.


Let us show you the Professional difference! PST. is a specialty Low Voltage Systems Integrator in the western united states. We are a GE Security Strategic Partner for EST fire alarm, security and access control systems. We provide Testing and Inspection of your new or existing systems. We have over fifty years of knowledge to assist you with your security requirements.