| Main Unit | Dimensions | 223mm x 105mm x 152mm |
| Weight | 1300 g (inlcuding battery) | |
| Quiescent Current | 5mA | |
| AC Plug Pack | 17V AC 300mA with integral earth | |
| Battery Backup | 12V, 800 mAh, Sealed Lead-Acid Rechargeable Battery |
| Radio Receiver | Type | Superheterodyne |
| Frequency | 303.875 MHz (Australia & New Zealand) | |
| Sensitivity | < -110 dBm |
| Radio Transmitter | Type | SAWR stabalised |
| Frequency | 303.875 MHz | |
| Power Output | <100µW | |
| Battery | 12V Alkaline (Box Style) 3V Lithium (Watch Style) |