Datasheet

When cleaning the LCD and casing, use a soft damp cloth only. Do
not use solvents or scouring agents.
Do not submerge the units into water.
Immediately remove all low powered batteries to avoid leakage and
damage. Replace
only with new batteries of the recommended size.
Do not make any repairs to the units. Please return them to the
original point of purchase for repair by a qualified engineer. Opening
and tampering with the units may invalidate its guarantee.
71