The number of different X-10 components out there is overwhelming to someone who has not used them before.
What I want is very simple...
When Circuit A is activated by a conventional switch I want Circuit B to be also activated.
When Circuit A is deactivated by a conventional switch I want Circuit B to be also deactivated.
Circuit B only has a source of power but no conventional switching of its own.
Seems there should be small "do-hickeys" that I could simply wire into each junction box, but I'm having trouble zeroing-in on the right components.