3VDC Relay Board Panel Mount
thingiverse
The Amazon description for this board is: 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) I made this mount for it for mounting on a panel or other flat surface. The mounting holes are sized for #8 screws. The relay board attaches to the mount via either screws, clips, or both. I'm just using the clips and it is very secure. If you have a high vibration environment, I recommend using screws.
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