7
Functional Check
1.
Open the test medium bottle.
2.
Hold the sensor head over the opened test agent bottle.
NOTICE
The bar indicator should show a clear reaction, otherwise the
sensor is defective and must be replaced.
Power Supply
Battery Change
1.
Open the battery compartment on the back.
2.
Remove old batteries.
3.
Insert new batteries.
4.
Close the battery compartment.
The two 1.5 V AAA batteries must be replaced when a grey battery symbol
appears in the top left-hand corner of the display. The remaining capacity is
1 hour. If the voltage drops further, the battery symbol turns black and the
unit switches off automatically.
