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10. HOLD FUNCTION
The HOLD / BACK LIGHT button (12) allows you to hold the measuring value on the display. The
symbol " " appears on the display. This facilitates reading, e.g. for documentation purposes. Another
press will switch back to measuring operation again.
11. BACK LIGHT FUNCTION
During any measurement, press and hold the HOLD / BACK LIGHT button (12) to turn on the back
light on the display (4). Press and hold it again to turn it off.
12. TORCH FUNCTION
During any measurement, press the torch button (11) to turn on the torch light (3). Press it again to
turn if off.
13. MAINTENANCE AND CLEANING
Never operate the measurement device when it is open.
RISK OF FATAL INJURY!
a) General
To ensure the accuracy of the multimeter over an extended period of time, it should be calibrated
once a year.
Apart from occasional cleaning and fuse replacements, the multimeter requires no servicing.
Information on changing the battery and fuse appears below.
Regularly check the technical safety of the instrument and measuring lines, e.g.
check for damage to the housing or squeezing etc.
b) Cleaning
Live components may be exposed if covers are opened or parts are removed.
The connected lines must be disconnected from the measuring device and all
measuring objects prior to cleaning or repairing the device. Switch the DMM off.
Do not use any carbon-containing cleaning agents or petrol, alcohol or the like to clean the product.
These could corrode the surface of the measuring instrument. Furthermore, the fumes are hazardous
to your health and explosive. Moreover, you should not use sharp-edged tools, screwdrivers or metal
brushes or similar for cleaning.
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