TeachIR (All in One School System)
Infrared Wireless Microphone (Hands-Free)
Easy-to-wear, neck-suspended design means unit can be ready for use quickly. Lightweight body can be worn for long periods of time without causing fatigue (130g with 2 alkaline batteries).
- Infrared light emission intensity adjustable at 2 levels.
- 2 selectable channel frequencies
- Antibacterial treatment
- Employs an electret condenser microphone unit.
- Low-battery indicator.
- Can be used with a built-in microphone or external microphone.
- An external MIC input level adjustment function allows sensitivity adjustment if the connected external microphone has a different sensitivity.
- Color stickers supplied to distinguish one unit from other wireless microphones.
|Battery||IR-200BT-2 rechargeable batteries for the infrared wireless microphone (2 pieces) or AA alkaline dry cell batteries|
|Current Consumption||typ.250mA (2.4V, Power selector switch:N)/typ.340mA (2.4V,Power selector switch:H)|
|Wavelength||870nm (AM:Brightness modulation)|
|Modulation Method||Frequency modulation)|
|Carrier Frequency||Channel A:3.100 MHz/Channel B: 3.350 MHz|
|Transmission Distance||Approx.20m (Power selector switch: H;In an unobstructed space.)/Approx. 15m (Power selector switch:N;In an unobstructed space.)|
|Modulation Sensitivity||±4.8 kHz (1 kHz,when SPL of 84 dB is input)|
|Maximum Input Sound Pressure||120dB SPL|
|Input Sensitivity Adjustment||Adjustment range:-9dB to 0dB (factory-preset:0dB)|
|Microphone Unit||Unidirectional electret condenser microphone|
|Input||External microphone input (ø3.5 monaural mini jack)|
|Battery Operation Time||Approx.8 hours (when the IR-200BT-2 rechargeable batteries for thr infrared wireless microphone is used; Power selector switch:N) Approx.6 hours (when the alkaline battery is used;Power selector switch:N)|
|Operating Temperature||0ºC to +40ºC|
|Operating Humidity||30% to 85% RH|
|Finish||Control Section:ABS resin,metallic grey,50% gloss,paint/Filter Section:Polycarbonate,optical cut filter|
|Dimension||64(W) x 91.3(H) x 27.3(D)mm|
|Weight||130g (with batteries and strap)|
|Accessories||Screw driver (for setting)x 1, Colour label (6 colours) x 1|