Hi, I have x2 attic exhaust fans 6 ft. apart from each other on a roof that has a ~45 deg. incline. Not how i would have designed ventilation, i replace the motors every 1.5 years or so. Anyhow, there are x2 cheap analog control boxes, one for each fan, and when one switches on the other is off, and the one fan will suck the outside air out of the other vent (and basically do nothing but burn electricity) until the attic heats up enough to activate both. I can't get the sensitivity so they both turn on at the same time, it is really coarse controls. What i would like is a digital control that can handle the amperage on both at the same time, and even better, I would like a control that kicks on the fans at low RPM at lower temps like 80C in the attic, and ramps up the RPM to full with temperature as the attic temp goes up, does such a thing exist? Presumably the right digital switching would prevent motor burn-out at less than full RPM? I don't like that i have zero ventilation until the attic gets hot, but having them blast full on at lower attic temps is not what i need either. I can't really install other vents (like ridge vents) because the power vents would just suck air from them instead of pulling from the soffits in the side attics of the house like i need them too. Any advice would be appreciated!

Howdy, y'all. I'm a bit of a Jack of no trades and could use some advice. I would like to attach two 3.5 watt LED table lamps that I'm modifying to one cord in order to cut down on wires inside of a light box I'm building for an aquarium. I'm not looking to simply plug them into an extension cord (space), but splice them into an extension cord i would cut and use for the plug of both. Is there a SAFE way for this to be achieved? Thanks for any and all advice/warnings/suggestions etc. Cheers!