M12 is quite common in "dirty" industrial environments and military apps. its vibration proof, resistant to corrosion, can meet low/no spark requirements, and y

M12 is quite common in "dirty" industrial environments and military apps. its vibration proof, resistant to corrosion, can meet low/no spark requirements, and you can manipulate the connectors with gloves on, which sounds silly but is not to be discounted when you are in a foxhole being shot at.