I updated my alarm code and now I’m drawing a blank on the master code, which is one of three numbers. Any suggestions on how I can figure out which one is the master code?
Since you’ve mentioned there are only three possibilities, why not try them all? Attempt to execute a * function that necessitates the master code, such as adding a new code.
Press * 5 (code) and observe the outcome. The two codes that aren’t the master will result in a long solid beep, while the master code will yield a few quick beeps as it accesses the function. Then simply press the pound key # a few times to exit.