Philips PH61159 RF Modulator (Discontinued by Manufacturer) RF modulator will work with DVD players, VCRs, TVs, and other audio/video components Can be used on channel 3 or channel 4 on your TV to show other components that are hooked up Connect through the RF input and output or the composite video input Stereos can also connect through the stereo audio inputs Modulator can switch from a TV channel to the video product that you have connected automatically