I got a few CLM6500 opto things and I was wondering what I have. I suspect they are an LED and a cadmium sulfide photo resistor. A quick check with a couple ohmmeters agrees. Do they have any redeeming qualities? I've heard of a CLM6000, but I can't find 6500. It just says CLM6500 and a smaller 509. - -- - Toby Paddock http://www.seanet.com/~tpaddock