In an ACS system, it's on the processor card. The bottom part of the face of that card has a plastic guard (usually black) that slides back and a tab that you pull out and the batteries fit in the holder.
Do this with power on. It takes 2 AA alkaline batteries.
Answers & Comments
In an ACS system, it's on the processor card. The bottom part of the face of that card has a plastic guard (usually black) that slides back and a tab that you pull out and the batteries fit in the holder.
Do this with power on. It takes 2 AA alkaline batteries.
Carl