Could someone please tell us how to use the piston magnets that we recieved with our bimba order? Also could you state what the proper use is for them? Thank you.
First off, it’s a cylinder 
What you recieved is not a magnet but a reed (proximity) switch. The cylinder has the magnet at the end of the rod and the reed switches will detect when the rod end (internal to the cylinter) is within proximity.
The reed switches can tell your controkl system what state (retracted or extended) your cylinder is in … and if it’d fully extended (/retracted)