Hi Vasile, Russell McMahon seems to have done a lot more work on this than I have. I was only being cheap so I didn't have to buy more batteries !! For the remotes they're great, but as Russell says, run them down too much and they'll die Been busy building some very important samples. Nearly finished and looking forward to some time off this week -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.