Simple 4 Channel Relay Board Case
thingiverse
Wanted a straightforward housing for a four-channel remote-controlled relay board that I'd bought from Ebay. It fits snugly on a 65mm by 53mm board, giving me easy access to the relay legs and power supply. However, since there are numerous designs like this available online, you might need to make some adjustments to accommodate different placements of the power terminal and antenna.
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