Elk Acknowledge Beep or chime?

[gfs]

when i arm or disarm my M1G i get a buzz that acknowledges that action. then mysteriously that changed to a chime style tone...  now its back to the Buzz... anyone know whats going on or how i can set this?  

 

[Del91574]

The buzz would sound most like an error tone to me, but I don't know what's going on in your case.
 
Maybe you have a point force arming, then the error tone, then you're hearing the count down.
 
Maybe some more details?