Where can I buy a fully outdoor all-weather locking tablet mount that stays outside 24/7?

I’m looking for something similar to the tablet setup but it needs to be truly made for outdoor use and stay outside 24/7. The tablet would be wall-mounted and exposed to rain, snow, water splashes, heat, freezing temperatures and public access so I need a locking metal tablet mount with a case and a charger where everything is fully weatherproof, including the charging system with no exposed ports or loose cables. I’ve been searching online, but most of the tablet mounts I find are clearly meant for indoor use, and even the ones labeled “weatherproof” don’t look strong enough to handle harsh conditions long term. I did find one outdoor option, but it still doesn’t feel weatherproof enough for what I need. Does anyone know of a real all-weather outdoor tablet enclosure that actually holds up in tough conditions, and where I can buy one online?