A code key is properly inserted when it snaps into place. You will need to insert a new code key:
•Whenever you open a new box of strips.
•Whenever either one of these displays appear:
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1.Make sure meter is turned off. Turn meter over so you are looking at the back. Remove old code key if one is installed.
2.Insert new code key until it snaps into place.
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3.Turn meter ON. A
Sensor
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o
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e:
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