American Two-Way

E.R.S. Security Alarm Systems is a provider of security systems and services. The company offers a range of services, such as burglar and fire alarm systems design, installation and monitoring. Additionally, its services include design, installation and monitoring of access control and time and attendance systems for commercial customers. E.R.S. Security Alarm Systems also specializes in design, installation and maintenance of central vacuum and intercom systems for residential customers. It also provides closed-circuit television systems design, installation and maintenance services. The company has fire prevention specialists who provide assistance in designing sprinkler monitoring, fire alarm and life safety systems. Its fire alarm systems feature devices, such as smoke and heat detectors, water flow switches, valve tampers, strobes and horns. E.R.S. Security Alarm Systems is located in El Monte, Calif.

Teletrac develops and markets wireless location information systems. The company s systems allow commercial fleet managers to track fleet movement and ensure employees are meeting productivity goals. Teletrac s flagship product, FleetDirector, is an Internet-enable system that locates and tracks the position of vehicles via Teletrac s authorized networks. The private company has more than 100 employees. Teletrac is located in Garden Grove, Ga.