A 3-way light switch allows you to control a light source from two separate points.
Jane — January 29,
Whoever designed it deserves recognition; a very original answer to a decades-old problem, and one I have no hesitation in recommending unreservedly.
You may find that you have a reversing section that you didn't know about.
Prompt reply to email from inventor.
I will avoid the deep technical discussion.
Sometimes going off and sometimes switching on.
If you do chose to use something like a PM42 power management devicedon't forget that you will need to count all wiring going to it as well.
I shall bare no responsibility if you'll get hurt or die while trying to follow my description, or if there will be any property damage improperly done AC wiring can cause fire.
If you can capture a 'scope trace of situations worse that what I have shown above, write me.