Features: simply put it is the old tv without av whitinput interface, through this converter, you can display the old tv av signal, you can access dvd, vcd, video recorders, set-top boxes and a variety of video source equipment. This product can change the output video and audio signal of dvd players, satellite receivers and other equipment to a rf signal, so let the tv which no video and audio signal input through an antenna input, also can watch the video program. Modle: sb-168avrf ouput: 6-12chsound carrier: 5.0/5.5/6.0/6.5mhzantenna input: 45-1000mhzinput voltage: 220v± 10%power consumption: 1w  connection method: set-top box, dvd red and white yellow connected to the av input on the distributor, put the  wired input line into the converter' s chin port, then the converter' s rf output line connected to the tv' s wired jack, and then re-search the tv. (have a simple map on the back of the package)after connection, switch on your tv, search in vh range and save. If you receive a few channels, there may be several clear signals are not clear, just choose the most clear channel can be.   tip: if the image appears black and white and jitter or sound noise or no sound and images, it is your home tv system problems, rather than the product problem. Especially those who brings in old-fashioned tv, you need to set their own image format for the pal d audio system, such as no pal d standard, it can not be converted. The converter is pal d standard, without standard conversion. Please confirm before you buy to avoid that you can not use after purchase. The such as the set-top box itself has a sound noise, then the natural use of this converter will be noisy, then you need to buy a isolator.