2.4GHz digital wireless public address system

Teaching a new generation of digital wireless public address system features: 1.Short-wave frequency hopping two-way 2.4G technology (global access band), the radio automatically scans and address of the code matching, you can easily implement any match, where are used where, truly, "a division of a wheat" 2.One of a microphone, clean and sanitary 3.Any match, no longer stocking the tedious and registration, 1000 the same school (different class) simultaneously without crosstalk 4.One of a microphone, equipment management more convenient 5.Saving energy saving, green products, do not frequent replacement of the battery, do not pollute the environment 6.Compact and lightweight, suitable for portable 7.Lithium battery charging with USB Interface, 8-hour charge time available Comprehensive performance 1.Modulation: Digital Frequency Modulated 2.Carrier frequency: 2.4GHz 3.Demodulation: GFSK digital modulation 4.Frequency Points:> 2000 5.Bit Rate: 16bit ± 32kHz 6.Audio Response: 20Hz-20kHz 7.Receiving sensitivity:-85dBm, 45dB of adjacent channel rejection, 30dB of image rejection 8.Total Harmonic Distortion: <0.5% 9.SNR:> 95dB 10.Dynamic range: 90dB 11.Use range:> 150m