brand：Study of cable

JF-306 wireless microphone features：

1, small size:
Pen emitter size is equivalent to a pen, is currently on the market the same product in the smallest volume, the lightest weight of the product, the overall weight of the product is only 20 grams. Users can hold, but also can not be used on the clothes, the use of any clothing requirements, long time use and no sense of weight. The utility model is convenient for users to carry, and is clean, sanitary and easy to manage.
2, green environmental protection:
The use of energy-saving technology ultra-low emission power, electromagnetic radiation is only ordinary mobile phone 1/90, worthy of the name". Built in lithium battery and charging module, with low voltage alarm, charging instructions, automatic shutdown after charging and other functions. A full time of more than 10 hours to meet the requirements of all day use.
3, strong anti-interference:
With professional ID code encryption transmission technology, ID coding up to one million units, each product is only a unique ID code. Use the same equipment in the same place without interference. The user does not speak, or in a state of weak signal, receiver with automatic mute function.
Schematic diagram of JF-306 wireless microphone:

    1 will receive a small USB port to receive a computer USB interface, the other end of the audio cable connected to the computer audio input port, the wiring is correct after receiving a small indicator light.
At a distance of 2 small receive within 3 meters of the first pen hold the microphone button for three seconds, and small to receive frequency (on the frequency of successful pen microphone and small receiving light from the red and blue lights flash into blue light slow flash).
3 of success frequency, the user can take the pen type microphone loudspeaker, microphone and pen small receiving effective transmission distance of 10-15 meters, pen type microphone red light slow flash when the power is insufficient, should be timely charging, charging the phone a long red light, red light dimmed after full charge.
The other pen type wireless microphone:

Jing Feng JF-307 pen small speaker wireless microphone

Large receiving wireless amplifier Jingfeng JF-310 pen