During last Friday's evening chat, there was a discussion about the compatibility of the Smarthome Icon (Insteon) switches in X10 mode. After a few tests done by Martin, it appears that these switches do not respond the same as other X10 switches when a multiple address sequence is used to turn several switches on or off. Suppose that you have two switches at addresses A/1 and A/2 and send the following commands: A/1, A/2, A/On: only the second switch will turn on. So it seems that only a command pair (or an all lights on/off command) can turn these on or off. This could be an annoying problem for someone replacing X10 switches with Icons but wanting to use them in X10 mode with existing macros in their HA setup.