... Fire alarm Control Panel,conventional fire alarm control panel, fire alarm panel, fire alarm, FACP, fire alarm system, fire-fighting, fire panel, fire alarm controller, fire ... 18 AH batteries (batteries over 4 AH require use of the external battery backbox, or ULC listed equivalent ... 17) LED indicators: - AC Power (green & yellow LED) - Fire Alarm (red LED) - Trouble (yellow LED) - Supervisory (yellow ...