The Warden Intercom Phone (WIP) forms an integral part of the Emergency Intercommunication System of the Ampac EV3000.
| Operating Voltage | 27 VDC (line driven) |
| Line Voltage | On hook - 25 VDC max; Off hook - 14 VDC max |
| Current Draw | On hook - 5 mA max; Off hook - 35 mA max |
| Line Impedance | 360 ohm balanced |
| Line Level | 0 dB (± 3dB) |
| Cabling | 3 wire - 2.5mm² max |
| Dimensions | 215mm H x 85mm W x 62mm D |
| Weight | 380 grams |
| 219-0007 | Warden Intercom Phone – 3 Wire |
| 291-0054 | WIP Enclosure Metal Surface Mounted |
