Detailed Product Description 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 objects3.Adopt 2.4G high frequency( UHF) and convey the three-dimensional acoustical signal distance is direct 60 m.4.Under the same transmission frequency, can be a lot of is received .5.The transmitter has no ...