Phototimers
converts
____________________
into
____________________
.
they
are
considered
____________________
____________________
____________________
.
They
are
positioned
____________________
the
IR
Light
paddles
coated
with
a
____________________
____________________
serves
as
the
detectors
.
The
Radiation
interacts
with
the
____________________
producing
____________________
____________________
which
is
transmitted
to
remote
____________________
____________________
or
____________________
that
convert
it
to
____________________
.
The
timer
is
then
tripped
.
Radiation
exposure
is
____________________
when
a
sufficiently
large
charge
has
been
____________________
