I used this with a contactor to start my 1 1/2 HP dust collector. I also daisy chain multiple duplex outputs with one controlled output so I can use many tools with just one probe. You are only limited by the amperage of the outlet and the tools connected to it. Since I only ever work with one tool, I don't have a problem with chain overload. The controller operates up to about 32 degrees Fahrenheit. Below that it won't start. I recommend this as a relatively inexpensive way to turn the dust collector on and off automatically.
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