Inserting/Changing the Battery
- The battery compartment cover (12) may only be opened with the test leads ((10) / (9)) removed. There is a risk of electric shock.
It is recommended that you use alkaline manganese non-rechargeable batteries to operate the measuring tool.
- Remove the test leads ((10)/(9)).
- Unscrew the 2 screws (11) on the battery compartment cover (12) and remove the cover .
- Insert the non-rechargeable batteries.
- Reinsert the battery compartment cover (12) and secure it with the 2 screws (11).
- The measuring tool can only be switched on if the battery compartment cover (12) is screwed down correctly.
- Always replace all the non-rechargeable batteries at the same time. Only use non-rechargeable batteries from the same manufacturer and which have the same capacity.
- When inserting the batteries, ensure that the polarity is correct according to the illustration on the inside of the battery compartment.
When the battery symbol 
first appears on the display and an audio signal is output, only a few measurements will still be possible. When the non-rechargeable batteries are completely discharged, an audio signal is output and the measuring tool switches off.
- Take the batteries out of the measuring tool when you are not using it for a prolonged period of time. The batteries can corrode during prolonged storage in the measuring tool.
- Never store the measuring tool without an inserted battery compartment cover (12), particularly in dusty or humid environments.