This selector system allows easy, one-time connection of DVD players, video games, camcorders, and more. For TVs not equipped with an A/V jack, this RF modulator is a must for connecting your equipment. From the Manufacturer's DVD647 RF Modulator is ideal for TVs not equipped with an A/V jack. It's used for connecting a DVD player, video game system, camcorder, or other A/V component that does not have an RF (coaxial) output to a TV that only has an RF input. It also features an RF input for connection of a cable TV signal or antenna signal.