| You're right on the Battery function. If you move the jumper away from the BAT, then all programs would be lost once the system is powered down.
The design somehow uses the battery to store all the programmings. maybe its because if the installer made a lot of boo-boo, they can start all over again by removing the battery jumper............
Just that once you start to program the system, make sure it is in the BAT position. |