Grundfos G 401 Instructions Manual page 13

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Insert the SIM card in the drawer.
Note: The SIM card must lie correctly in
the drawer.
Insert the drawer with the SIM card.
Note: Check that the drawer engages
correctly with the guide rails of the G 400
module.
Gently push the drawer into place.
Switch on the internal back-up battery by
pushing the switch to the right.
Switch on the normal power supply.
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