1) Enter Installer Code on the panel while disarmed (Default 4112) + 800
2) You Will now see 20 INSTALLER CODE if that was the correct installer code.
3) Press *40
PABX Access Code (This field applies only to the Lynx Plus control.)
If fewer than 6 digits will be entered, exit by pressing [✻]. To clear entries, press ✻40✻.
Lynx Plus SELECTIONS
PABX Access Code
Enter up to 6 digits if PABX is needed to access an outside line.
4) Press *99 After the screen updates to the next field to exit programming
Note: GeoArm can change the installer code upon activation