Relays were my favorite component when I was a kid. At one point, I had built a switch panel out of a thick cardboard box that had pushbuttons on it with a bunc

Relays were my favorite component when I was a kid. At one point, I had built a switch panel out of a thick cardboard box that had pushbuttons on it with a bunch of relays inside. I had modded all the electronics in my room which emitted light of whatever sort, indicators & such- be it LEDs or those old gold incandecant lamps or whatever, so that they all had wires running back to the relays in that box. I was then able to turn off all the devices' lights so they were on & functioning, but the room would be completely dark. Later I had a job doing electrical assembly- panels & PLCs & all kinds of sensors. There I learned of the existance of solid-state relays we used. I imagine if they'd be connected to your paradox circuit, there'd be no noise, but probably a significant amount of heat, lol!