1.Effectively there is not any position that limit in the range of receiving. 2.The radiowave can pierce through the wall , the floor, the glass waits for objects 3.Adopt 863.3 MHz high frequency( UHF) and convey the three-dimensional acoustical signal distance is direct 100 meters. 4.Under the same transmission frequency, can be a lot of is received . 5.The transmitter has no signal automatic shut-down function while inputting signals 6.Can use various kinds of sound sources , like TV, CD/DVD, Computer,etc. 7.Using the frequency synthetic technology of newest phase locking cycle( PLL) it is steadier to work 8.Shoot the machine to will shut down automatically in had no signal input 1.8-3 minutes
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