Infrared Wireless Microphone – Black

Description

The 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 system uses 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.

Battery IR-200BT-2 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 EmitterWavelength 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 IR-200BT 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

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