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EqUIPMENT LIMITATIONS
To avoid physical and equipment damage when using the ATN
PS-40, carefully read and understand the following equipment
limitations.
• The equipment requires some night light (moonlight, star-
light, etc.) to operate. The level of equipment performance
depends upon the level of light.
• Night light reduces by passing through the clouds, while op-
erating under trees, at building shadows, etc.
• The equipment is less effective when viewing into shadows
and other darkened areas.
• The equipment is less effective when viewing through the
rain, fog, sleet, snow or smoke.
• The equipment will not "see" through the dense smoke.
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