The SLx modulator allows the signal from a VCR/DVD player, camcorder, CCTV camera or other device with an AV only output to be viewed on an ordinary TV without a Scart or Phono input. Allows you to watch free to air digital satellite TV on a TV that does not have a spare SCART/PHONO connection, using the existing coaxial input. Allows you to watch digital satellite receivers, DVDs or any AV device without an internal modulator on a TV that doe not have a spare SCART/PHONO connection, using the existing coaxial input. Allows you to distribute the signal from any audio-visual device to all TVs in your home.