- Mobile (GSM), fixed line (PSTN) telephone or Ethernet connectivity (VoIP)
- Extensive internal diagnostics, accessible locally or remotely
- Configure remotely using tone-dialling, or optional on site via serial port.
- Adaptive volume control and duplex operation
- Programmable send and receive levels
- Internal battery with charging options (solar, mains or remote power feed)
- Digitally stored announcements
- Response to remote user commands is by digitised voice
- Tilt/vandal detection with automatic dial up reporting
- Unique ID for location information
- One push button standard but can be expanded to three
- Lightning and radio frequency interference protection on PSTN / DC Feed board
- Audible and visual feedback on button press
- Polycarbonate label where graphics can be readily customized
- 5mm extruded aluminium housing with dual high security locks and powder coat finish
- IP rating of 55 for housing