Hi, sorry about the inadequate presentation of the optional magnetic cover latch. For desktop (horizontal) use, the enclosure cover sits on the base without need for magnets, but for wall-mounted applications, we wanted to provide a way for the cover to stay on. We included the magnets and washers (which act as magnet pole pieces) so customers could have a solution for wall mount, but didn’t want to pre-bond all product regardless because it would introduce exposure to quality control issues.
One washer and one magnet are bonded to the plastic base in each of the three round pockets (washer to base first, then magnet on top of washer) and the remaining three washers are bonded to the inside of the cover in the three round pockets. We recommend a gel form of super-glue (cyanoacrylate), although various epoxies will also work.
Below is a link to videos I made showing the three bonding steps.
If you’re not mounting it on the wall, you can leave the magnets and washers off and use them for something else. We’re in the process of getting this info attached to the product webpage- we’re just running a little behind. Sorry for the inconvenience!
Link to bonding videos (process just as described above):