TOA IR-300M |ชุดไมค์ลอยเดี๋ยว ไมโครโฟนไร้สาย แบบอินฟาเรด รุ่นห้อยคอ

รหัสสินค้า : IR-300M

TOA IR-300M ไมโครโฟนไร้สาย แบบอินฟาเรด รุ่นห้อยคอ

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.

Specification 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 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 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