Stationary Transmitter for all model

can detect GPS signal in a location and control the audio file playing of the receivers

The file playing is triggered automatically when the transmitter arrives to a location.

Can support many languages. Each language can have 999 audios.

Transmitter can transmit voice, or control the playing of receivers

1200mAh Rechargeable Lithium battery provides over 16 hours playing time

Portable or stationary transmitter with USB jack available for conference, MP3 playing function.

Integrated rechargeable Lithium battery, only 4 hours charging time. 

50-280 meters range from the transmitter to receivers.

Handheld or body pack transmitters are available  

80-100 meters transmission distance  

Receiver can be hanged behind neck. Battery can last 10 hours.  

1Handheld or body pack transmitters are available

150 meters transmission distance

Transmitter can set receivers channels turn off all the receivers by one button