10
• Lift off the lid and remove the two button cells from their holders (see
illustration below).
• Insert two new button cells into the holders with the plus poles facing up
(see illustration).
Always replace both batteries at the same time.
• Put the lid back on and screw it down using the four fastening screws.
Take especial care that the seal does not fall out or get pushed
out.
• Replace the upper casing (and snap back into place, paying attention to
the catch protrusions: two narrow protrusions on one side, one broader
one on the other).
Sender
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