Kapro Prolaser Multi Beam Manuel D'utilisation page 8

Replace the batteries if the beam/battery indicator (b) starts
to flash instead of emitting a steady light.
WARNING: Battery can deteriorate, leak or explode and
can cause injury or fire.
1. Do not shorten the battery terminals.
2. Do not dispose of battery into household waste.
3. Do not dispose of battery in fire.
4. Defective or dead batteries must be disposed according
to local regulations.
5. Keep the batteries out of children's reach.
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