Project Description

TOA (RM-300X Remote Microphone)


  • For both emergency and general purpose broadcast
  • Zone selection or all call
  • PC-programmable system software permits desired
    functions to be assigned to individual function keys
    (equipped with 2 LED indicators)
  • Up to 7 RM-210F Remote Microphone Extension units can
    be used with each RM-300X Remote Microphone


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 (phantom power supply: 3 V DC)
-20 dB (*1), 4.7 kΩ, unbalanced, φ3.5 mm phone jack (2P) (AUX Input)
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) or greater
Branch line: Shielded Category 5 twisted pair cable (CAT5-STP) or greater, RJ45 connector
Maximum Cable Distance 1200 m (3937.01 ft)
No. of Connectable Extension units Max. 7 units
Monitor Speaker Built inside
Operation Function switch, Covered switch, Broadcast switch
Indicators 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, black, semi-gloss
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-210F
Wall mounting bracket: WB-RM200
Electret condenser microphone: WH-4000A, YP-M101, YP-M301 etc.