This audio and video system uses the latest wireless technology to send stereo audio and video pictures around your home, shop or office. Watch your favourite TV programs or listen to Hi-Fi quality stereo sound in any part of your home. Send surveillance camera images to another part of the building. All without the need to run cables. Features a phase-locked loop (PLL) electronic circuit that constantly adjusts, locking onto any input signal and avoiding any reception drift. The refreshing new compact design incorporates the 2.4GHz dipole antenna and has 4 selectable channels.