All-auto Smart Wireless Microphone System A500 Covering a range of 300 meter / 980 ft One Receiver+ 4 Mics Optional Stacking up to 5 sets w/ 20mics

The World's First All-auto-intelligent Technology auto-frequency changing, auto-scanning, auto-pairing, auto-locking,  Plug-to-Play Installation, Zero Configuration  Required
 Tap-off-tap-on to tackle with Co-frequency Interference

Developed for  conference, versatile use

Microphone Parameters:

Frequency Range： 610-670MHz
Available Channels: 480
                             Auto-Adaptive Ajustment
Frequency Stability: ±10ppm
Modulation Type:  FM
RF Power: 10~30mW Auto-Adaptive
Audio Response: 40~18000Hz
Total Harmonic Distortion (THD) ≤0.8%
Microphone Type: Dynamic
                          Cardioid Polar Pattern 
Power Supply: 2*1.5V  AA disposable Battery
Battery Duration: 5~10 Hours

Receiver Parameters:

Frequency Range： 610-670MHz
Available Channels:  120+120+120+120
                              Auto-Adaptive Ajustment
Oscillation Mode: Phase-Locked Loop(PLL)           
                          Frequency Synthesis
Frequency Stability: ±10ppm
Receiving Mode: Superheterodyne Double 
                         Conversion
Receiver Sensitivity:  -103dBm
Audio Response: 40~18000Hz
Total Harmonic Distortion (THD): ≤1%
Signal-to-Noise Ratio: ≥100dB
Audio Output:  XLR Connector Independent              
                       Balanced Output
                      Φ6.35 Socket Mixed 
                       Unbalanced Output
Power Supply: DC 12V / 1000mA
Power Consumption ≤8W