(This field applies only to the LynxSIA Plus control)
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 *39 to start configuration of Cross Zone Timers
4) Press *99 After the screen updates to the next field to exit programming
Note: GeoArm can change the installer code upon activation