| Power Source |
24 V DC (operating range: 15 to 40 V DC), supplied from the voice evacuation frame or optional AD-246 power supply unit via DC input power connector. |
| DC Plug Requirements |
Outer diameter: 5.5 mm, Inner diameter: 2.1 mm, Length: 9.5 mm, Non-polarity type |
| Operation |
Function key, Emergency/All-zone emergency broadcast key, Talk key |
| Current Consumption |
240 mA or less |
| Audio Output |
0 dB*, 600 Ω, balanced |
| External Microphone Input |
-40 dB*, 2.2 kΩ, unbalanced, ø3.5 mm phone jack (2P) with 3V DC phantom power (electret condenser mic) |
| AUX Input |
-20 dB*, 4.7 kΩ, unbalanced, ø3.5 mm phone jack (2P) |
| Distortion |
1% or less |
| Frequency Response |
100 Hz to 20 kHz |
| Signal to Noise Ratio |
60 dB or more |
| Microphone |
Unidirectional electret condenser with AGC (ON/OFF selectable) |
| Chime |
Built-in PCM sound source, monitorable using internal speaker |
| Level Control |
Mic sensitivity, Monitor speaker volume, Chime (via software) |
| Maximum Cable Length |
1200 m (3937.01 ft) |
| Main Line Connection |
Shielded CPEV cable (1 pair audio + 1 pair data + 1 pair monitor/control + 1 pair power), or CAT5-STP or better |
| Branch Line Connection |
Shielded CAT5-STP or better, RJ45 connector |
| Connectable Extension Units |
Max. 7 units |
| Monitor Speaker |
Built-in type |
| Indicators |
Power, Failure, Status (×10), Selection (×10), Emergency, Broadcast status, Microphone |
| Operating Temperature |
0°C to 40°C (32°F to 104°F) |
| Operating Humidity |
35% to 80% RH (no condensation) |
| Finish |
ABS resin, black, semi-gloss |