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1.Pull out the auxiliary key.

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2.Insert a tape-wrapped flathead screwdriver into the notch in the advanced key and rotate it in the direction shown in the figure to open the advanced key.

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3.Remove the battery cap.

4.Remove the battery.

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Note

• If the O-ring has come off, put it back in place before installing the battery.

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5.Install the new battery (CR2025) with the negative pole facing down.

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6.Install the battery cap.

7.Align the upper and lower covers and close the transmitter.

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8.Insert the auxiliary key.

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