That could be done by the servicemen or managers on-site. There is no reason at all to have remote control fridges. All this really does is make some higher up feel more importantl because they have a centralised controller, while providing very little real benefit.

Anything you might want to change with a freezer already requires someone physically there. It's like making a socket ratchet have a remote controlled direction toggle. Or a remote control button to light the inside of your money box on fire.