Teaching Microphone with External USB HID

In the field of educational microphone applications, our company has accumulated over a decade of industry experience. To achieve the 'one teacher, one microphone' functionality, we have progressed from the initial simple close-range pairing design to the current system design concept. This evolution showcases our deep industry engagement, understanding of customer habits and environments, and our continuous efforts to address customer pain points. This solution comprises an educational wireless microphone, a receiver module, and a USB page-turning receiver, capable of functions such as amplification, recording, air mouse, and page flipping through keyboard shortcuts.

  • Automatic Channel Allocation

    Pre-set Number of Channels: 14, Supports One Transmitter to Multiple Receivers; Multiple Sets Can Be Used Simultaneously Without Interference

  • Strong anti-interference capability

    Digital processing for audio transmission

  • Resistance to WiFi Interference

    Wireless transmission with resistance to WiFi interference

  • Transmission Distance

    Wireless transmission distance of over 50 meters in open areas

  • Portable

    Built-in PCB board antenna, ideal for portable products

  • Ready-to-Use

    Designed for one teacher, one microphone; the teacher can use it in any classroom by simply turning it on

Specification ItemsAudio Transmission ModuleAudio Reception Module

Power Supply Voltage

5V

5V

Current Consumption

<45mA        

<25mA        

Operating Temperature

-10 ℃ ~ +70 ℃

-10 ℃ ~ +70 ℃

Frequency Range

2400~2483.5MHz

2400~2483.5MHz

Number of Channels

14

14

Modulation Type

GFSK

GFSK

Transmission Power

17dBM


Input Impedance

1OK Ohm


Input Level

2.8Vp-p(Max)


Receiver Sensitivity


-85dBm(Min.)

Output Impedance


32 Ohm

Output Level


2.8Vp-p(Max)

Audio Latency

<10ms        

<10ms      

Frequency Response

10~8KHz,±3dB

10~8KHz,±3dB

Dynamic Range @1kHz

81dB

81dB

Total Harmonic Distortion

0.1%

0.1%


  • Pairing

    One-to-One Microphone Pairing: Bidirectional pairing, needs to be paired again every time it is powered on. Saved ID Code Pairing: Bidirectional pairing, only needs to be paired once, can be used after powering on in the future

  • Volume Adjustment

    Adjust the headphone amplifier of the receiving module

  • Air Mouse Functionality

    Mouse Middle Button, Left Click, Right Click

  • Slide Controls

    Page Up/Page Down, Draw, Clear Drawing, One-Click Black Screen, etc

  • Computer Media Player Controls

    revious/Next Track, Play/Pause, Computer System Volume Increase/Decrease

  • USB Devices

    Built-in USB microphone, USB keyboard, USB mouse. Plug and play for the operating system

  • USB receiver pairing

    After successful pairing between the transmitter and the audio module, the transmitter also pairs with the USB receiver at close range