combine used and new batteries with
one another.
•
Always replace both batteries at the
same time.
•
If needed, clean the batteries and de-
vice contacts before inserting them.
Explanation of symbols
You can find the following symbols on the
device and/or in the operating instructions:
Follow the safety notes
Only use in enclosed spaces.
The monitor is admitted for use with
CAT II
circuits, which are directly connect-
300 V
ed with the low voltage grid.
Note on disposing of old appliances
(see page 118)
93