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TOA Hands-Free Infrared Wireless Microphone - IR-300M
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Literature
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.
- Ready-to-wear design with neck strap
- Intelligent positioning of the emitter avoids drop-outs through user‘s handling
- Built-in electret condenser microphone
- Infrared light emission intensity adjustable
- 2 selectable channels
- Antibacterial treatment
- Low-battery indicator
- Connection of optional external microphone possible
- An external MIC input level adjustable
| Specifications | |
|---|---|
| Battery | 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) |
| Tone Signal | 32.768 kHz |
| Modulation Sensitivity | ±4.8 kHz (1 kHz, when SPL of 84 dB is input) |
| Microphone Element | Unidirectional electret condenser microphone |
| Maximum Input Sound Pressure Level | 120 dB SPL |
| Input Sensitivity Adjustment | Adjustment range: -9 dB to 0 dB (factory preset: 0 dB) |
| Audio Frequency Response | 100 Hz - 12 kHz |
| Pre-emphasis | 300 μs |
| Input | External microphone input (Φ3.5 monaural mini jack) |
| Battery Life | 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 °C to +40 °C (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) x 91.3 (H) x27.3 (D) mm (2.52" x 3.59" x 1.07") |
| Weight | 130 g (0.29 lb) (with battery and strap) |
| Included Accessories | Screw driver (for setting) x 1, Color label (6 colors) x 1 |
| Optional Accessories | Battery charger: IR-200BC, Ni-MH battery: IR-210BT-2 (containing 2 pieces) |
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