Pyle PLML50FB User Manual page 15

Remove Insulating Sheet
The remote control comes with an insulating sheet attached to the underside
of the remote control, as illustrated on the right. The remote control will not
work until the insulating sheet is removed.
Replace Lithium Battery Cell
1. When the lithium cell battery becomes weak, replace it as illustrated on the
right.
2. Press and hold the movable block in the direction indicated by arrow 1.
At the same time, pull the cell holder out of the remote control in the
direction indicated by arrow 2.
3. Replace the old cell with a new one, making sure the (+) polarity is facing
upward.
4. Re-insert the cell holder into the remote control.
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