Hello, all. I bought the last Stack-On Strong Box Safe with Electronic Lock that was being used as a display model and the instruction manual was lost by the store. I've figured out how to program the keypad but I've yet to figure out how to turn off the beeping every time a button is pushed. I'd prefer not to let someone know my exact whereabouts should I ever need time to retrieve my gun stealthily. I'm hoping one of you will have the same model or a similar one and will be kind enough to tell me how to turn off the beeps. The description of the strong box at Stack-On's website says the beeps can be turned off. The model I have is the PS-514. Thanks!