Textron GREENLE DM-300 Manuel D'instructions page 6

Important Safety Information
Electric shock hazard:
Do not change the measurement function while the test leads are
connected to a component or circuit.
Failure to observe this precaution may result in injury and can damage
the unit.
Electric shock hazard:
• Do not attempt to repair this unit. It contains no user-serviceable
parts.
• Do not expose the unit to extremes in temperature or high humidity.
Refer to "Specifications."
Failure to observe these precautions may result in injury and can
damage the unit.
6