Centurion SMART GUARD air Operating Instructions Manual page 27

The Master Code can still be defaulted to
but doing this will break the pairing between the
SMARTGUARDair and any paired receivers.
This pairing will need to be re-established in order to
continue using the system.
Keypad Alarm Tone Mute feature (Default=off)
Establishing this feature turns off the audible feedback
when entering a code. This prevents an eavesdropper
from determining the number of digits in the code.
Tones will still be present in Programming Mode.
Enter the following keystrokes:
1. Enter Program Mode
2. Select Security Menu
3. Set Duress (Code+1)
4. Set Panic Alarm (*+#)
5. Set (Wrong Codes)
6. Set Anti-default
7. Set Alarm Tone Mute
8. Exit Program Mode
0
6
0
0
0
0
0
turns function off,
page 25
STANDBY
Master Code
1
OR
OR 1
1
OR
1
OR
OR 1
1
turns function on
3 4
1 2 ,
Indicator LEDs