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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) |
| 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 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 |
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Provided the conditions in our refund policy have been met, refunds will be processed using the original form of payment. You can return an item purchased online by posting it to us. Please contact customer service for return address. Please note that delivery costs will be excluded from the refund unless goods are returned in accordance with your statutory rights (e.g. they are faulty or not as ordered).
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