An audio-visual telephone type (with voice communications) system. It is designed to provide an emergency signal between 1 to 112 areas of refuge (area of rescue assistance) remote refuge call boxes and the master station, known as the refuge command center.

The system answers with an 'acknowledge' LED, and the ability to speak with the calling remote(s) using the built-in telephone intercom feature, from the refuge command center, or a remote telephone.

Calls are indicated at the master by visual and audible signals. Remote refuge call box stations have a call-placed / call-answered LED. A maximum of 112 remote refuge call box stations may be connected to the refuge command center. For smaller capacity systems (10 call boxes or less)

The systems meet all national codes for area of refuge systems, and include battery back-up as a standard feature.

Unlike most other systems, the  system  allows for remote dialing to up to 5 outside telephone numbers in the event that a call is not answered at the refuge command center, in a pre-determined time period.