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A dry contact is a contact that does not provide voltage. For instance, the push-to-talk switch of a microphone, which just closes a circuit without providing voltage.

A wet contact is a contact that will provide voltage when closed, like the switch on the wall that activates the 110 VAC outlet to turn a lamp on in a room.


+------o o---------(o)



Dry contact


+------o o---------(o)



--- Wet contact





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โˆ™ 2007-09-11 05:36:46
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Q: What are dry and wet contacts?
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