{"product_id":"toair300m-infrared-wireless-microphone-black","title":"Infrared Wireless Microphone - Black","description":"\u003cp\u003eThe 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.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eBattery IR-200BT-2 rechargeable battery for the infrared wireless microphone (option)\u003cbr\u003eor AA alkaline dry cell battery (2 pieces). \u003cbr\u003e\u003cbr\u003eCurrent Consumption \u003cbr\u003eTyp. 250 mA (2.4 V Power selector switch: N)\u003cbr\u003eTyp. 340 mA (2.4 V Power selector switch: H) \u003cbr\u003e\u003cbr\u003eInfrared EmitterWavelength 870 nm (AM: Brightness modulation) \u003cbr\u003e\u003cbr\u003eModulation Method Frequency modulation \u003cbr\u003e\u003cbr\u003eCarrier Frequency \u003cbr\u003eChannel A: 3.100 MHz\u003cbr\u003eChannel B: 3.350 MHz \u003cbr\u003e\u003cbr\u003eTransmission Distance Approx. 20 m (65 ft) (Power selector switch: H in an unobstructed space)\u003cbr\u003e\u003cbr\u003eApprox. 15 m (50 ft) (Power selector switch: N in an unobstructed space) \u003cbr\u003e\u003cbr\u003eTone Signal 32.768 kHz \u003cbr\u003e\u003cbr\u003eModulation Sensitivity ±4.8 kHz (1 kHz when SPL of 84 dB is input) \u003cbr\u003e\u003cbr\u003eMaximum Input Sound Pressure 120 dB SPL \u003cbr\u003e\u003cbr\u003eInput Sensitivity Adjustment Adjustment range: -9 dB to 0 dB (factory preset: 0 dB) \u003cbr\u003e\u003cbr\u003eMicrophone Unit Unidirectional electret condenser microphone \u003cbr\u003e\u003cbr\u003eFrequency Response 100 Hz - 12 kHz \u003cbr\u003e\u003cbr\u003ePreemphasis 300 μs \u003cbr\u003e\u003cbr\u003eInput External microphone input (φ3.5 monaural mini jack) \u003cbr\u003e\u003cbr\u003eBattery Operation Time \u003cbr\u003eApprox. 8 h (when the IR-200BT rechargeable battery for the infrared wireless microphone is used Power selector switch: N)\u003cbr\u003eApprox. 6 h (when the alkaline battery is used Power selector switch: N) \u003cbr\u003e\u003cbr\u003eOperating Temperature 0 ℃ to +40 ℃ (32 ゜F to 104 ゜F) \u003cbr\u003e\u003cbr\u003eOperating Humidity 30 % to 85 %RH \u003cbr\u003e\u003cbr\u003eFinish \u003cbr\u003eControl section: ABS resin metallic gray paint 50% gloss\u003cbr\u003eFilter section: Polycarbonate optical cut filter \u003cbr\u003e\u003cbr\u003eDimensions 64 (W) × 91.3 (H) ×27.3 (D) mm (2.52 × 3.59 × 1.07) \u003cbr\u003e\u003cbr\u003eWeight 130 g (0.29 lb) (with battery and strap) \u003cbr\u003e\u003cbr\u003eAccessory Screw driver (for setting) …1 Color label (6 colors) …1\u003c\/p\u003e\u003ctable class=\"features\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"feature\"\u003eType\u003c\/td\u003e\n\u003ctd\u003eTransmitter  \u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TOA","offers":[{"title":"Default Title","offer_id":63661229801802,"sku":"TOAIR300M","price":265.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/6896\/1354\/files\/TOA__Midwich__TOAIR300M__Wireless_Mic.jpg?v=1791027915","url":"https:\/\/crystaltechgroup.myshopify.com\/products\/toair300m-infrared-wireless-microphone-black","provider":"Crystal Tech","version":"1.0","type":"link"}