We lock all tampers out. There is no reason for the customer to be taking lids off pirs/panels, in doing so could interfere with the integrity of the system, no?
I've seen decorators refixing pirs on upside down and all sorts. So if this was under maint for insurance purposes, decorator removes sensor refixes it upside down resets the system, then the system fails to perform after a break in, who's the customer calling?? Decorator?