Operation
Safety Instructions
Any claims for guarantee will become invalid in the event
of damage that results from the non-observance of the op-
erating manual. We do not accept responsibility for such
damage. Nor do we accept responsibility for damage to
property or for personal injuries caused by improper use or
non-observance of safety instructions. Guarantees will not
be accepted in any such case.
The unauthorized conversion and/or modification of the product
is inadmissible because of safety and approval reasons (CE).
This device is not a toy. Keep the device out of reach of chil-
dren! Do not expose the device to mechanical stress, to mois-
ture or liquids. Only use the device outdoors under appropriate
weather condition or with appropriate protection. The light sen-
sor or the device must not be heated by the light source. Keep
sufficient distance to light sources with strong heat develop-
ment.
Information on the Correct Luminance
The luminance is measured in lux. The adaptability of the hu-
man eye is almost unlimited. This easily leads to demanding of
the eye visual performance even if the illumination is not suffi-
cient. If there is no light or the illumination is not sufficient, the
eye can fulfil its visual performance only with great effort or
even cannot see. Very often, this involves eye injuries the num-
ber of accidents increases.
With the Digital Luxmeter Testboy TV333 you acquired a prod-
uct by means of which you can verify everywhere if the lumi-
nance is sufficient for the normal visual performance (i.e. every-
day tasks). Eyesight means the detection of brightness and col-
our differences, form, motion as well as distance. Only with the
correct luminance, the eye can fulfil its visual performance.
Therefore, sufficient illumination is so important. Concerning
light, we often save at the wrong end. Dark zones give an un-
friendly atmosphere. Allow yourself more light.
®
Testboy
TV 333
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