The firefighter will be mounted adjacent to your smoke detector. Find the tab at the base of the device.
Press the tab in.
Pull the cover away from the base.
Locate the battery.
Gently remove the battery from its connections.
Note the battery terminals (+, -). Putting in a battery reversed can damage the device.
Place a new battery in the device (CR123A).
Ensuring that the hooks go in first, replace the cover on the device.
Press in until you hear a click.
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