http://tinyurl.com/kg9py2v<P>GateCrafters Outdoor Buried Driveway Exit Sensor - 200' Lead Wire (CS-200-S200)Product Review<P> Click on the link for more reviews<P>Detects moving metal and opens the gate automatically.<P>Comes with pre-attached wire in 200' length.<P>Completely direct burial, no conduit needed.<P>Gets buried parallel to the driveway, not under it, for easy install.<P>Compatible with Estate Swing openers.<P>
