With the one I got it can be put anywhere to be honest as it's a lock in itself and has something like 50,000 to 1 combination. Thing with a normal switch you could stick it in a 'hidden' place but it will either be a right pain to operate all the time as it's that hidden or it'll be a normal switch.
I got this as it's proper secure and I can stick it anywhere
Mind you by the time they even smash as window the alarm will be blaring and I'd be out the front door with a crowbar