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Laser Cut Bumper for 2 Channel USB Relay
by macman8888
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This is a simple bumper for a 2 channel USB relay board, commonly available around the internet. Use a material at least 0.1"/2.54mm thick to ensure the pins on the board clear. I would also suggest using plastic screws to mount the board, as the screw heads will probably need to be trimmed in order to clear the terminal blocks.
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