If a wrench appears on the left side of the display, there is
a hardware error. In this case, turn the device on and off
repeatedly. If the wrench still appears, the device is defective.
25. Care and Cleaning
Never use aggressive detergents, rubbing alcohol
or other chemical solutions, as these may damage
the casing or cause the product to malfunction.
Do not immerse the product in water or other
liquids.
• The product is maintenance-free. Only clean the exterior
with a soft, dry cloth or a brush.
• Use a small brush or a cotton bud to clean the measuring
sensor.
• Store and transport the measuring device only in the
included pouch.
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