Introduction
The sun’s UV rays can penetrate your skin and
cause damage such as freckles, skin aging, liver
spots, cataracts, sunburn, and skin cancer. Knowing
the strength of these rays allows you to take the
necessary steps to help avoid skin damage from UV
exposure. UV-Smart measures UVA and UVB indi-
vidually, giving you a more complete picture of your
UV exposure risk.
What is UV?
UV stands for ultraviolet, and in this case, is used
in reference to the ultraviolet radiation waves that are
emitted from the sun. UV is invisible and cannot be
detected by the eye.
The two most prevalent types are UVA and UVB. UVA
is linked to accelerated skin aging, liver spots and
freckles. UVB causes the familiar sunburn and is
also related to skin cancer and cataracts. UV levels
change depending on the season, weather, time of
day, altitude and light reflection from land—poten-
tially putting your skin at risk year round. UV-Smart
measures the amount of UVA and UVB exposure
immediately and monitors changes in UV as they occur.
UV-Smart measures the amount of UVA/B in your
vicinity in W/m
2
, or watts per square meter, which is
how light is commonly measured. UV-Smart classifies
both UVA and UVB results into four levels: weak,
medium, strong and very strong. These levels are
based on the numeric results, which are shown on
the display with a corresponding graphic symbol.
