Hi, I have a Texecom Premier Elite 24 alarm. At night I set the alarm to night time part arm. In the morning, when I come down the stairs, and the PIR sensor (downstairs hallway) picks up my movement, the keypad sounds a repeated beep sound. I want to change the repeated beep countdown sound on the keypad from a beep to a (quieter) chirp. Has anyone else managed to do this? Any help would be great, thanks