EXTECH
INSTRUMENTS
4
RH35
‐
en
‐
EU_v1.1
7/14
Operation
Getting
Started
Remove
the
protective
foil
from
the
display.
Open
the
battery
compartment
and
remove
the
battery
insulation
strip.
The
device
will
sound
the
alarm
and
all
LCD
segments
will
be
displayed
for
two
seconds
as
the
device
switches
ON.
The
indoor
temperature,
relative
humidity,
and
corresponding
facial
symbol
will
appear
on
the
display.
This
indicates
that
the
meter
is
now
ready
for
use.
Note:
Do
not
attach
the
support
stand
until
the
switches
for
the
Radar
Animation
and
Alarm
Sound
are
set
as
desired.
These
two
switches
are
concealed
by
the
support
stand
when
it
is
attached.
Refer
to
the
Description
section
of
this
guide
for
the
location
of
the
switches
and
refer
to
the
dedicated
sections
below
for
more
detail.
24
Hour
Mold
Radar
Display
The
device
measures
the
relative
humidity
%
every
30
seconds
and
calculates
the
average
value
every
10
minutes.
The
innovative
mold
radar
display
graphically
depicts
the
average
on
a
24
‐
hour
time
‐
line.
The
time
“0
h”
represents
the
value
for
the
current
hour.
“
‐
1”
represents
the
last
hour,
“
‐
3”
for
the
past
2
‐
3
hours,
“
‐
6”
for
the
past
4
‐
6
hours,
“
‐
12”
for
the
past
7
‐
12
hours,
and
“
‐
24”
for
the
past
13
‐
24
hours.
The
relative
humidity
values
are
shown
on
grid
lines
from
15
to
85%.
A
reading
higher
than
65%
RH
indicates
a
potential
for
mold.
Radar
Animation
ON/OFF
Switch
Remove
the
support
stand
to
access
the
Radar
Animation
ON/OFF
switch
on
the
back
of
the
unit
(the
switch
is
on
the
right
identified
by
the
arrow
icons).
Slide
the
switch
UP
to
activate
the
Radar
Animation.
Slide
the
switch
DOWN
to
deactivate
the
Radar
Animation.
Alarm
Sound
ON/OFF
Switch
Remove
the
support
stand
to
access
the
Alarm
Sound
ON/OFF
switch
on
the
back
of
the
unit
(the
switch
is
on
the
left
identified
by
the
audio
icons).
Slide
the
switch
UP
to
activate
the
Alarm
Sound
beeper.
Slide
the
switch
DOWN
to
de
‐
activate
the
Alarm
Sound
beeper.
If
the
relative
humidity
measurement
is
higher
than
65%,
the
alarm
beeper
sounds
for
one
minute
and
the
red
warning
light
(front
panel,
right)
flashes.
Press
any
button
to
stop
the
alarm
sound.
The
warning
light
continues
flashing
until
the
measured
humidity
falls
below
65%.
Comfort
Level
The
device
displays
one
of
two
facial
indicators
representing
the
comfort
level
of
the
indoor
climate.
A
smiling
face
indicates
an
ideal
relative
humidity
range
(40
‐
60%).
A
frowning
face
indicates
an
overly
wet
or
dry
condition
(<
40%
or
>
60%).
