Don, The latest version of Site Mate (Version 7.1) includes the ability to work with an implement switch. We have worked with Premier Technologies to develop this feature (we’ve done the software side and they’ve done the hardware/switches). They have both a simple toggle switch as well as an actual implement switch. The switches will work with laptop computers as well as with most CE devices. For more details contact Premier Technologies at 219-337-5319 or Ahill@premiertechinc.com .