| Power Source | 24 V DC (operating range: 15 - 40 V DC, supplied from the voice evacuation frame) or DC input power supply connector (when the optional AD-246 power supply unit used). Usable DC power supply plug: 5.5 mm (0.22") outer diameter, 2.1 mm (0.08") inner diameter, 9.5 mm (0.37") long, and non-polarity type. |
| Current Consumption | 240 mA or less |
| Audio Output | 0 dB (*1), 600 Ω, balanced |
| External Microphone Input | -40 dB (*1), 2.2 kΩ, unbalanced, φ3.5 mm phone jack (2P) for electret condenser microphone -20 dB (*1), 4.7 kΩ, unbalanced, φ3.5 mm phone jack (2P) (AUX Input) (phantom power supply: 3 V DC) |
| Distortion | 1 % or less |
| Frequency Response | 100 Hz - 20 kHz |
| Signal to Noise Ratio | 60 dB or more |
| Microphone | Unidirectional electret condenser microphone with AGC (ON/OFF selectable) |
| Chime | Built inside (PCM sound source), monitoring possible using built-in speaker |
| Level Controls | Microphone sensitivity control, Monitor speaker volume control, Chime (adjustable using the software) |
| Connection Cables | Main line: Shielded CPEV cable (1 pair of audio wire + 1 pair of data wire + 1 pair of monitor/control wire + 1 pair of power supply wire) or Shielded Category 5 twisted pair cable (CAT5-STP) Branch line: Shielded Category 5 twisted pair cable (CAT5-STP), RJ45 connector |
| Maximum Cable Distance | 1200 m (3937.01 ft) |
