La Crosse Technology Wireless 433 MHz Weather Station with Sun/Moon Time WS-8015U - Manual (Page 28)

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Maintenance and Care Instructions
A. Extreme temperatures, vibration, and shock should be avoided to
prevent damage to the units.
B. Clean displays and units with a soft, damp cloth. Do not use solvents
or scouring agents; they may mark the displays and casings.
C. Do not submerge in water.
D. Immediately remove all low powered batteries to avoid leakage and
damage.
E. Opening the casings invalidates the warranty. Do not try to repair the
unit. Contact La Crosse Technology for repairs.