Warning: When removing the battery, check the marks for the polarity of the battery connection, otherwise mark the marks.
Contact plate location (1) before removing it from the head
Order of execution
1. Using the blade of a thin screwdriver, remove the heads from the key.
2. Press the tabs on both sides of the head and remove the head cover.
3. Screwdriver to press the latch (2) and remove the top battery.
4. Remove the contact plate by turning it so that the two cut edges are opposite the latches and using a screwdriver blade, remove it from the head, see fig. Contact plate location (1) before removing it from the head.
5. Remove the bottom battery.
6. Install the bottom battery into the head with the positive battery pole facing down. There is a sign on the positive pole of the battery (+).
7. Install the contact plate and the top battery on the battery with the positive side down until the latches snap into place.
8. Install the head cover until the clips click into place.
9. Install and secure the head in the key.
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