A comprehensive list of Waltham, MA based companies offering installation, maintenance and repair of home and business security systems, CCTV & burglar alarms and video surveillance services. 
Lure attackers, detect, and respond even faster, across all your environments-including cloud. Threat Intelligence, practical steps and expert advice to find and stop advanced cyber threats. Inside-out protection with real-time visibility, in-depth monitoring, accelerated remediation, and powerful automation and integration capabilities.
Put the NOREL stamp on your Testing & Inspections. Our Team assures that your fire alarm, fire pump or sprinkler systems remain fully operational and up to date. Are your Fire, Security, CCTV & Radio Monitoring Integrated? Improve direct communications and reaction time around life safety and security with our integrated systems.
Julie Woods — I needed an inspection asap for a sale and these guys were super fast and nice and even helped me with my monitoring company
Keltron has been a source of innovation for the fire and life safety industry for over a half century. Since Keltron's introduction of digital printers more than 50 years ago by our MIT and Northeastern University-educated founders, we have continued to develop and manufacture the hardware, software and services required to meet the needs of our customers and the fire and life safety market.
Justin Barker — A very knowledgeable company everyone from sales to tech support has been great to work with. They can help me with any and