Based in Alpharetta, Callaway Security has been family owned for more than 20 years. The company offers a variety of residential and business security services. Callaway Security's residential services include new alarm installs, alarm system upgrade, security system monitoring as well as wireless alarm monitoring. Some of its business services include access control systems and home automation systems.

Critical Systems specialises in enterprise-class fire alarm, fire suppression, life safety and integrated building security solutions for high-rise properties, healthcare campuses and mission-critical data, manufacturing and distribution facilities in Atlanta and its suburbs.