The NetMedia MODLAMP SCM2 self contained camera and modulator converts its video signal to a selected television channel. It is powered over the same coax cable that returns the video broadcast signal for One Wire Video installation. It mounts to a typical round 4 inch junction box and is viewed with a television tuner. Other junction boxes from your local hardware store may also be used after replacing the round base with another that has a 1/2 inch diameter hole for the elbow bracket. Equipment that does not have a tuner, such as a security monitor, Quad display, or DVR, will require a demodulator (any TV tuner device with a composite video output such as a VCR) to convert the video for its use.