A home security system is one of the best ways to protect your family and property. The system is only as good as the batteries in the monitor box are. Batteries should be changed at least twice a year and more often if needed. You may have heard that when the time changes each year in April and November, it's a good time to change out batteries in smoke alarms and security systems. All systems are different but most give you access to the battery compartment, so that you can change them when needed.
Locate the battery compartment on your home security system. Most of the time it is located under the keypad cover.
Use a flat-head screwdriver to gently pry off any covers over the battery compartment, if necessary.
Determine which size of batteries your system uses by looking at the old batteries in the compartment, or by checking the instruction manual that came with the system. Also notice the position the batteries are in. Get the size of battery you need.
Check to see if the old batteries have leaked into the battery compartment. Use caution when removing them and cleaning the compartment.
Once the old batteries have been removed, immediately discard them so that you won't mistakenly put them back in the compartment.
Install the new batteries, making sure you put them in properly.
Run the battery check test, following the instructions in the manual for the system.