1. This product uses the L-band frequencies, four channel audio and video signal transmission, anti-jamming performance, interfere with traditional video transmission equipment for high-power walkie-talkie voice communication equipment, the receiver output image caused by the blank screen, this product has been thoroughly resolved. 2. The circuit optimization and upgrading of product, with a new encryption chip circuit, general market circulation of conventional receiver can not receive the normal transmission of images of this product, you must use the matching receiver can properly receive the image and sound. Note: This system consists of a transmitter and receiver each one, there are "RECEIVER" logo for the receiver. Transmitter Installation:???????????????????????????????? ?? A ??? working channel selection. 2. ??? With audio and video cable audio / video signal transmitter of audio and video input port to connect the 3. ??? Installed antenna. 4. Replace the power ??? matching, power indicator light. ? 5 ?? transmitter Basic parameters Model: jjy-t31 supply voltage:? 12V DC Current:?? 800mA Dimensions:? 110 * 58 * 21 (mm) transmit power:? 8000mW (Enhanced Edition) receivers installed?:? ?????????????????????????????????????????????????? ????????????????? 1. ??? working channel receiver and transmitter working channel to select the same. 2. ??? Use of audio and video cable TV or monitor with audio and video output on the receiver is connected. 3. ??? Installed antenna. 4. Replace the power ??? matching, power indicator light. After the transmitter and receiver installed, image effects observed receiver output by adjusting the angle of the receiver transmitter or antenna until both reach the best sound and picture. Note ???????????????????????????????????????????????? ??????????????????????? one before ??? energized, be sure to install the machine designed with a good antenna, try to keep the antenna upright when used up, transmission can achieve the best results. 2. Be sure to use ??? factory supplied power adapter to avoid damage to the machine. 3 ??? accessories a transmitter, a receiver, 12V power supply two, standard two small antenna, AV line, clip a 4 ??? product Packing volume: 230X66X153mm ??? Weight: 0.78Kg?