The 5.8GHz wireless video/audio sender consists of one transmitter. This device transmits wirelessly vivid video and hi-fi stereo sound from a VCR,TV set, LD, DVD, VCD, Satellite Receiver or cable set top box to any TV or monitor. It can also be used in conjunction with a camcorder or CCD camera and turns into a wireless security monitoring system. As to the transmission capability, the signal can go up to 400 feet clear light-of-sight and even penetrate wall. With the built-in IR remote extender, it allows the user to remotely control the audio/video sources in the other rooms. In addition, four user selectable channels allows multiple transmitters to multiple receivers operation in the same area. All these advanced features will make your home life with amazing convenience and joy.