Hands-Free Infrared Wireless Microphone for TS-800 & TS-900 Conference Systems


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The TOA IR-300M is a hands-free infrared wireless microphone. It eliminates problems with interference or eavesdropping, allowing simultaneous use in adjacent conference rooms or school classrooms. Since infrared wireless microphone systems use a frequency band that does not interfere with that of the TS-800 and TS-900 series infrared conference system, both systems can be simultaneously installed in the same location.

TOA IR-300M Features:

  • Easy-to-wear, neck-suspended design
  • Lightweight body
  • Ajustable infrared light emission at 2 levels
  • Two selectable channel frequencies
  • Antibacterial treatment
  • Employs an electret condenser microphone or external microphone
  • External MIC input level adjustment function allows for sensitivity adjustment
  • Color-coded ID stickers available

TOA IR-300M Specifications:

  • General:
    • Battery: IR-200BT-2 rechargeable battery for the infrared wireless microphone (option) or AA alkaline dry cell battery (2 pieces)
    • Current Consumption: Typ. 250mA (2.4V, Power selector switch: N // Typ. 340mA (2.4V, Power Selector switch: H)
    • Tone Signal: 32.768kHz
    • Modulation Sensitivity: +/-4.8kHz (1kHz, when SPL of 84dB is input)
    • Maximum Input Sound Pressure: 120dB SPL
    • Input Sensitivity Adjustment: Adjustment range: -9dB to 0dB (factory preset: 0dB)
    • Microphone Unit: Unidirectional electret condenser microphone
    • Frequency Response: 100Hz - 12kHz
    • Preemphasis: 300us
    • Input: External microphone input 1/8" monaural mini jack
    • Battery Operation Time: Approx. 8 hours (rechargeable battery, power switch set to N) // Approx. 6 hours (alkaline battery, power switch set to N)
    • Operating Temperature: 32 degrees F to 104 degrees F
    • Operating Humidity: 30% to 85% RH
    • Finish: Control section: ABS resin, metallic gray, paint, 50% gloss // filter section: Polycarbonate, optical cut filter
    • Dimensions: 2.52" x 3.59" x 1.07"
    • Weight: 0.29lb
    • Acessories: 1 screwdriver (for setting), 1 color label (6 colors)
  • Infrared Emitter:
    • Wavelength: 870nm (AM: Brightness modulation)
    • Modulation Method: Frequency modulation
    • Carrier Frequency: Channel A: 3.100MHz // Channel B: 3.350MHz
    • Transmission Distance: Approx. 65' (power selector switch: H, in an unobstructed space) // Approx 50' (Power selector switch: N, in an unobstructed space)


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