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Tagged with potting environmental-sealing
2
questions
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votes
1
answer
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Why are some relays not completely sealed?
Here are some of the pictures of PCB relays I found online. One may notice there are these opening/holes on the top or bottom of the package. What are the purposes of these 'air vents'?
5
votes
2
answers
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Waterproof enclosures
I have a simple farm gate monitor which I'd like to put in a rugged waterproof enclosure to keep it dry enough to operate outside for approximately ten years with no maintenance other than the ...