21 RF153-en-GB_V1.1 11/18
Battery Replacement
Two ‘AAA’ batteries power the meter. When
the symbol flashes, replace the
batteries.
1. Turn the meter off
2. Open the rear battery cover as shown
in the diagrams below
3. Replace the batteries observing
correct polarity
4. Close the battery cover
5. Fasten the compartment before use
Step One Step Two
CAUTION: Close the cover tightly in order to
prevent liquid ingress