I have an Insteon serial PLC, which was originally part of the ELK M1 Insteon kit from Smarthome.  I ended up doing my lighting through CQC, so I don't need this unit.  I have the it available for sale for $35+Shipping.   It's seen all of a couple hours of use, and should be ready to go if you want to use it with an ELK - just load the Insteon firmware (available on the ELK web site) onto the M1XSP and plug it in.
Please PM if interested.
-Steve
				
			Please PM if interested.
-Steve