That’s great David and sounds like something I would have done.Warning!! This is Geek stuff!! This could go in the Woodshop Dust Control forum but it really applies to any device you might want to remote start.
About 3 years ago I bought the three-remote control set from Harbor Freight to activate my dust collector, shop vac, and window fan I use when I spray finishes. I realized the remotes weren’t intended for the current draw of the dust collector but figured I would use it until it burnt up, which I thought would be a couple of weeks.
Well, three years later it finally burned up the circuit. So I took the unit apart, repaired the circuit board, and then used an enclosure to house a 30 amp contactor and the remote switch – it works great! And now I needn’t be concerned about the remote not working since the current for switching the coil on the contactor is only about 0.04 amps (4 watts).
My only real concern was whether the remote would activate the relay switch since it’s enclosed in the steel enclosure but it seems to work just fine from anywhere in the shop. Before the dust collector really gets going you can hear the contactor close when I press the remote and that’s a good sound!
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David the tool man
Are you electronic technician? That was my trade for 42 years before retirement.