The 1020 is an infra-red photoelectric pulse plethysmograph
which can be used to record changes in pulsatile blood flow from fingers, toes,
ears, the forehead, and other places. The use of a matched, infra-red source
and receiver pair minimizes the effects of ambient light. The standard 1020
is generally attached to an extremity with a "hook and loop" strap.
Clear, thin double-sided adhesive disks (such as our model 1080B adhesive disks)
can also be used to attach the 1020 to flat portions of skin. The 1020FC has
a spring loaded holder sized to lightly clamp over a finger. The black metal
cover also further reduces ambient light intrusion. The 1020EC has a 1020 source
and receiver pair housed in a small plastic clip suitable for use on thin, loose
skin segments such as the ear. The 1020, 1020EC, and 1020FC sense light reflected
back from the skin.
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