8WD4 420-5AF

SIEMENS 8WD4 420-5AF STACK LIGHT BLUE LED 24VAC/DC

You will find that Siemens products come with clear wiring diagrams.

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SIEMENS 8WD4 420-5AF STACK LIGHT BLUE LED 24VAC/DC NIB

I replaced my old unit with a newer Siemens model and it works great.

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