Features: Strong long Transmission Distance 300M/1000Feet.Suitable for one-floor with 1-2 walls.Images received by means of radio are vivid and stable, the color is flamboyant, and the sound is clear. Support 8 selectable Channel with 2.4GHz: Effectively avoid wireless signal interference from router and other wireless device. Works with digital TV converter boxes to send an A/V signal to any TV in any room. Plug and Play:no required install software,without any setting. The for image is interfered. A).Please adjust the angle of the antenna for 2.4GHz transmitter and the receiver. B).Please try to change the 2.4GHz transmission channel for the transmitter and the receiver. C).If allowed, please put the transmitter and the receiver in a higher place to strengthen the wireless transmission. Specifications: Color:Silver Material:Aluminum Size:10x10x2.7cm/3.94x3.94x1.06in Note: Please allow a little error on the size due to manual measurement. The color might exist slightly difference due to different displays. Package includes: 1 x Transmitter Receiver