On Sun, Jun 8, 2008 at 5:21 PM, Dennis Crawley wrote: > Hi. > Is there any standard in how a UPS could be shuted down via RS232 pins? I doubt there is a standard but you might be able to look through the source code here to get an idea of what is available: http://www.networkupstools.org/compat/stable.html Alex -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist