Einleitung
Werkzeuge
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Open the key. Using a small screwdriver gently push in the plastic clips at the marked points. One by one. You have to push up the lid a bit at this side.
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Replace the battery with a new one. Battery type: CR2032 (3V)
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Follow the steps backwards to assemble the unit.
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Abschluss
To reassemble your device, follow these instructions in reverse order.