IR-300M Infrared Wireless Microphone

IR-300M Infrared Wireless Microphone

IR-300M Infrared Wireless Microphone

IR-300M

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

(*1) Do not use battery together with rechargeable or dry batteries of different product numbers. 
       Failure to follow this instruction may result in battery leakage or excessive heat generation.

Battery (*1) Rechargeable battery for the infrared wireless microphone (option)
or AA alkaline dry cell battery (2 pieces).
Current Consumption Typ. 250 mA (2.4 V, Power selector switch: N)
Typ. 340 mA (2.4 V, Power selector switch: H)

Infrared Emitter
Wavelength 870 nm (AM: Brightness modulation)
Modulation Method Frequency modulation
Carrier Frequency Channel A: 3.100 MHz
Channel B: 3.350 MHz
Transmission Distance Approx. 20 m (65 ft) (Power selector switch: H, in an unobstructed space)
Approx. 15 m (50 ft) (Power selector switch: N, in an unobstructed space)

 

Tone Signal 32.768 kHz
Modulation Sensitivity ±4.8 kHz (1 kHz, when SPL of 84 dB is input)
Maximum Input Sound Pressure 120 dB SPL
Input Sensitivity Adjustment Adjustment range: -9 dB to 0 dB (factory preset: 0 dB)
Microphone Unit Unidirectional electret condenser microphone
Frequency Response 100 Hz - 12 kHz
Preemphasis 300 μs
Input External microphone input (φ3.5 monaural mini jack)
Battery Operation Time Approx. 8 h (when the Rechargeable battery for the infrared wireless
microphone is used, Power selector switch: N)
Approx. 6 h (when the alkaline battery is used, Power selector switch: N)
Operating Temperature 0 ℃ to +40 ℃ (32 ゜F to 104 ゜F)
Operating Humidity 30 % to 85 %RH (no condensation)
Finish Control section: ABS resin, metallic gray, paint, 50% gloss
Filter section: Polycarbonate, optical cut filter
Dimensions 64 (W) × 91.3 (H) ×27.3 (D) mm (2.52" × 3.59" × 1.07")
Weight 130 g (0.29 lb) (with battery and strap)
Accessory Screw driver (for setting) …1, Color label (6 colors) …1
Option Battery charger: IR-200BC
Ni-MH Battery: IR-200BT-2 (containing 2 pieces) / IR-210BT-2 (containing 2 pieces)

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