1, the appearance of small, lightweight and easy to carry. The transmitter weight is not more than 20g, a long time with the use of no load bearing. After use, can be placed in the bag, take up little space, easier to personal custody.
2, can be equipped with a microphone, a microphone or a short microphone, to provide users with a variety of options.
3, the use of energy-saving technology ultra-low emission power, electromagnetic radiation is only ordinary mobile phone 1/90, worthy of the name "green wireless microphone".
4, built-in lithium battery and charging module, with low voltage alarm, charging instructions, automatic shutdown after charging function. A full time of more than 6-8 hours to meet the requirements of all day use.
5, with professional ID code encryption transmission technology, ID coding up to one million units, each product is only a single ID code. Use the same equipment in the same place without interference.
6, the transmitter design volume toggle switch, easy to users according to the environment, adjust the volume at any time.
7, the transmitter and receiver is not on the frequency, or away from the receiver after the frequency, the transmitter automatically shut down after 2 minutes.
8, an external antenna, receiving distance can reach 20 meters, to meet the needs of safe platform and big classroom.
9, with a 3.5 audio input port, the output of the 6.35 microphone and audio output port 3.5.
Schematic diagram of JF-303 wireless microphone:

 

 

Receiver schematic
1 connect the receiving audio input port with the power amplifier MIC port, then connect the large receiving antenna to the antenna interface. The power indicator light is on. Wireless signal flash.
2 microphone receiving clip transmitter microphone jack, then press the middle button for three seconds clip orange emission frequency in the receiving distance within five meters (the frequency after the success of clip transmitter and receiving light from the flash into slow flash).
3 of success frequency after the first volume, the user can launch with a clip audio clip, transmitter and receiver effective transmission distance of 20 meters above the clip launch red light slow flash when the power is low, should be timely charging, charging clip of the red light, red light dimmed after full charge.
The other clip wireless microphone:

Jingfeng JF-304 Lavalier wireless microphone

Jingfeng JF-308 mini speaker wireless amplifier