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6. STORAGE AND MAINTENANCE
The unit is a sophisticated precision optical instrument equipped
with laser and electronics. Therefore, it should be handled with
due care.
Keep away from direct sunlight.
Avoid impacts, jolts, dust, moisture, and sharp changes of
temperature.
Do not use the device at temperatures higher than 50
o
C
(122
o
F).
Prevent unit from direct sunlight
Do not touch optical surfaces. Doing so may damage the
anti-reflection coating.
Clean optical surfaces only with professional camera lens
cleaning supplies.
Clean the exterior of the unit with a soft clean cloth.
Keep away from heating appliances and central heating.
Remove the battery when storing the device for long time.
All repair works must be performed only by an authorized
service.
Prevent bright light from focussing through the eyepiece