Turn off all lights in a housecode.
This command can only be used for an X10 controller, it will have no effect for any other interface type.
all lights off “X10 housecode A-P”
interface (name of an X10 capable interface)
all lights off "A" interface "My CM11"
If the interface parameter is left out you must have a Default Outgoing Powerline interface selected in the preferences or no command can be sent.