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Replace the button cell battery with the power ON. If replaced when the power is OFF, the
date setting and log data will be lost.
Replacing the Button Cell Battery
(1) Pull on the two battery holder knobs.
(2) Pull out the button cell battery holder tray.
Note: Due to the cable connections, do not pull
it out farther than necessary.
(3) Remove the button cell battery in the direction
indicated by the arrow.
(4) Install a new battery and return the tray to its original position.
Note: Push the knobs in until they click into place.