Owner's Manual

sensor are clean and not covered.
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Remove the surface film, sticker and other covers.
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Clean of water drop, fingerprint, dirt, etc. (by non-dust cloth instead of alcohol and other
organic solvents).
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Return to repair if the surface has shedding, crack, scratch or wear, etc.
7. In order to avoid disturbing the ultrasonic system, do not use 40 kHz ultrasonic device,
such as ultrasonic range finder, fault detector, cleaner or welding machine.