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Old 02-06-2023, 09:56 AM   #8
Chuck v
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Join Date: Dec 2009
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Attached is a short PDF showing how the latching mechanism in these relays work such that no power is needed to maintain either the open or the closed state...so you will not have voltage on the coils EXCEPT when the momentary rocker switch in the stairwell is actually being pushed in.


If there has been some work on the harness or other hacking of the switch/wires/etc. then the small fuses on either coil may be blown...that would preclude latching relay actuation.



Chuck
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