Demon Electric choke

I read somewhere, someone tapped one side of the voltage regulator for power. I did this and it is working but i'm uncomfortable having constant 12v to the choke. Someone else posted adding some sort of module to the choke. I dont know what its called but i happen to have one in my mopar only junk drawer. Picture below.

How does this module work? Does it shut off after a while? The way i see it, 12v heats up the choke coil, opening the choke. Once the motor is warm, engine heat will keep it open.

Any thoughts?

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