TESTBOY TV 333 Bedienungsanleitung Seite 18

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Operation
Safety Instructions
Any claims for guarantee will become invalid in the event of damage that results from the
non-observance of the operating manual. We do not accept responsibility for such dam-
age. 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 children! Do not expose the device to
mechanical stress, to moisture or liquids. Only use the device outdoors under appropriate weath-
er condition or with appropriate protection. The light sensor or the device must not be heated by
the light source. Keep sufficient distance to light sources with strong heat development.
Information on the Correct Luminance
The luminance is measured in lux. The adaptability of the human eye is almost unlimited. This
easily leads to demanding of the eye visual performance even if the illumination is not sufficient.
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 number of accidents
increases.
With the Digital Luxmeter Testboy TV333 you acquired a product by means of which you can
verify everywhere if the luminance is sufficient for the normal visual performance (i.e. everyday
tasks). Eyesight means the detection of brightness and colour 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 unfriendly atmosphere. Allow yourself more light.
The kind of illumination influences the information that is transmitted by the eye to the brain. In-
crease the illumination where precise seeing is necessary. In rooms with an luminance inferior to
30 lux, the danger of accidents increases!
Older people need more light, because their visual performance decreased. A 60-year old needs
approx. twice the light of a 30-year old.
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