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* 0 dB = 1 V

Power Source 24 V DC (operating range: 15 – 40 V DC, supplied from the audio input
unit) or DC input power supple 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*, 600 Ω, balanced
External Microphone Input -40 dB*, 2.2 kΩ, unbalanced, mini jack, for electret condenser microphone
(phantom power supply: 3 V DC)
Distortion 1 % or less
Frequency Response 100 Hz – 20 kHz
S/N 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 Control Microphone sensitivity control, Monitor speaker volume control,
Chime (adjustable using the software)
Connection Cable Main line: Shielded CPEV cable (1 pair of audio wire + 1 pair of data wire +
1 pair of monitor/control wire + 1 pair of 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 800 m (874.89 yd)
No. of Connectable Expansion Max. 4 units
Monitor Speaker Built inside
Operation Function switch, Covered switch, Broadcast switch
Indicator Power indicator, Failure indicator, Function switch indicator,
Covered switch indicator, Broadcast switch indicator
Operating Temperature 0 ℃ to +40 ℃ (32 ゜F to 104 ゜F)
Operating Humidity 35 % to 80 % RH (no condensation)
Finish ABS resin, blueish gray
Dimensions 190 (W) × 76.5 (H) × 215 (D) mm (7.48″ × 3.01″ × 8.46″)
(excluding microphone)
Weight 880 g (1.94 lb)
Option Remote microphone extension: RM-210
Wall mounting bracket: WB-RM200
Electret condenser microphone: WH-4000A, YP-M101, YP-M301 etc.