A fire alarm call box is a box that you can find on the wall in some buildings. It is also sometimes called a "pull station." It is there to help people let others know if there is a fire in the building.
Inside the box, there is a small lever or button that you can pull or push to sound an alarm. When you pull the lever or push the button, it sets off a loud noise that tells everyone in the building that there might be a fire.
The fire alarm call box is important because it helps people quickly get the message out that there is a fire. That way, everyone can evacuate the building safely and quickly, and the fire department can be called to put out the fire.
Remember: If you ever see a fire alarm call box, it's best to leave it alone unless you need to use it in an emergency. Don't play with it or pull the lever for fun. It's there to help keep people safe in case of a fire.