low batteries. How do I fix it?
Looks like this is for a 2GIG Panel. First be sure to determine which device names are reporting as having a low battery. If they are wireless sensors you can replace the sensor battery directly.
If they are wired sensors on a TAKE-345 Takeover Module, (there are only two here showing low battery, but the programming leads me to believe they are on a TAKE-345) then you would have a low battery on the 12vdc brick battery.
The 12vdc battery would be found attached to the power supply for the TAKE, this is most often in the old alarm panel metal can.