*Effectively there is not any position that limit in the range of
receiving. *The radiowave can pierce through the wall , the floor, the glass
waits for objects. *Adopt 863MHz(EU)high frequency,912.5-914.5MHz(USA) ( UHF) and
convey the 3D acoustical signal distance is direct 100 meters. *Under the same transmission frequency, can be a lot of is
received. *The transmitter has no signal automatic shut-down function while
inputting signals. *Can use various kinds of sound sources , like TV, CD/DVD,MP3/MP4
PALYER,RADIO,MD,Computer,etc. *Using the frequency synthetic technology of newest phase locking
cycle( PLL) it is steadier to wor