If your panel has been beeping throughout the day and you want to turn off the beeping on your panel just follow the steps below:
Scroll down on the Simon XT until you see "System Programming"
Immediately press "OK"
Put in 4321 (this is the default installer code) then"OK" again
It will display "Access Codes", (if it does not then try the steps above again all together with no pauses) scroll down until you see "Siren Options".
Scroll down until you see "Trouble Beeps"
Press OK (it will start Flashing "ON")
Scroll down until it is flashing "OFF"
Press Status 5 times
That's it. You have successfully stopped the beeping.