Have the same one. Cable isn't long enough to go far enough where I could mount it so I just have it laying on the floor behind the converter under the dinette seating. Can't see ever needing to use it but it's there and accessible.
Same thing with the cable for the remote display on our hardwired EMS. I ended up putting it at the back of a cabinet above the dinette seating and the cable length *just* made it. Would have put the Charge Wizard remote beside it if the cable would have reached.
It's too bad neither the pendant or EMS remote are available in a flush wall mounted version or have extension cables available.