Automatic multipurpose emergency lights circuit is shown. Usually emergency lights connected to the mains, in fully charged standby. When a sudden power failure and sudden ambi
ent light from strong to weak when it is determined that this is a smart dark due to the power outages caused by lit and timely emergency lights. After 10min After the emergency light will automatically turn off, then the general staff had been evacuated to a safe location, no longer need to provide lighting, emergency lights can be turned off to prevent further damage to the excessive discharge of lead-acid batteries.