Energy Savings web site is still under construction. It has been this way for many months. They promised at Lightfair that it would be a priority for the coming months. The web site is http://www.energysavingsinc.com/ I would just call them for the protocol. Do you have a web address for Energy Savings? I could not find it this afternoon. They might have some details on the protocol & command set. I have found that DSI & DALI use manchester encoding but not what the physical interface is yet. I will contact ATCO tomorrow to see if they will talk about it. If anyone else is interested I will post the results of what I find to the list. Regards... ___________________________________________ David Duffy Audio Visual Devices P/L U8, 9-11 Trade St, Cleveland 4163 Australia Ph: +61 7 38210362 Fax: +61 7 38210281 New Web: www.audiovisualdevices.com.au New email: avd@audiovisualdevices.com.au ___________________________________________ -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.