PA Speaker shift occurs Bluetooth device frequency hopping spread spectrum communication technology, digital transmission technologies such as voice encryption 2.4G digital wireless microphone successful solution to the traditional wireless microphone frequency channeling problem of poor anti-interference ability and mini- and so we have done an innovative attempt. Let's look at 2.4G digital microphone is how to meet the special needs of the education sector. The use of intensive study and education to meet the requirements of: a microphone to work in 2.4GHz (ISM) band wireless conference speakers, modulation / demodulation process fully digital. Encrypted transmission technology, has strong anti-interference, versatility and good. Each device has a unique ID code authentic original conference speakers, ID encode up to 1 million group meeting speakers and sound reinforcement, the complete elimination of the traditional analog wireless microphone frequency channeling phenomenon. Green: The figure is a drop-type and T-type wireless microphone microphone, using low-power transmitters (1 mW), is an international standard of 1/10. Just so that the radio signal covers the entire range of the classroom, to avoid a long time in strong electromagnetic radiation environment on human health. The use of rechargeable lithium batteries can be recycled, reducing damage to the environment after use disposable batteries, it is a true 'green wireless microphone'. Active Speaker (Active Speaker), also known as "active speakers." Usually it refers to the speakers with a power amplifier, such as multimedia computer speakers, active subwoofer, as well as some new home theater active speakers. Active speaker amplifier circuit as built conference speaker wall mount, the user does not have to consider the problem of matching with the amplifier, but also easy to use the lower level of the audio signal directly drives. In addition, some professional recording with built-in amplifier circuit monitors and with built-in electronic crossover circuitry and an amplifier electronic frequency sound can also be included in the scope of powered speakers. Authentic original conference speakers, conference speakers, sound equipment provided by Wuhan Wuhan Engineering Co., Ltd. Jiuhua video. Video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) strong, credible, in Wuhan of control and adjustment equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Jiuhua Wuhan innovative ideas will lead into the brilliant video and you work for a better future!