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You're assuming the tank switch is low voltage.

The very first thing to do is read the manual for the installation and/or parts used. Second, approach the tank setup with a high voltage multimeter and carefully and safely take measurements of what you might be dealing with.




> The very first thing to do is read the manual for the installation and/or parts used. Second, approach the tank setup with a high voltage multimeter and carefully and safely take measurements of what you might be dealing with.

Good call, I’ll make sure it’s not 120v or 24v with a multimeter before attaching anything that expects dry contacts.




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