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One of the biggest misconceptions is that a master switch is a contactor in your panel. Yes, it can be used to turn off the lights, but it is not the same as a real master switch. In this video, I will show how this function should actually work and talk about the cost of implementing such a system, since most customers are often not even aware of the cost of certain engineering solutions. Video about the operation of local master switches in systems on a controller or PLR • Electrical panel for a bathhouse for 500,000+ WirenBo... Video about dimming LED backlights • Why do you need a dimmer in a modern ...