*4 channels. Fixed frequency.
*4 controllers can used simultaneously.
*Front panel ：each channel has a red RF lamp to indicate the signal.
*Back panel ：2 pull rod antennas for signal receiving.
*Back‐panel ：2 balanced output and 1 mixed unbalanced output.
*Microphone power consumption is 30mA. 9V*1 battery,support 6 hours.
*Light ring on the mic head display working status.
*Working distance: 30‐60meter
* It's suitable for various kinds of conference and performance occasion