Installation
and
Operating
Manual
LCD
‐
Thermometer
/
Clock
S
No.
1253
The
3
‐
fold
thermometer
with
crystal
clock
is
purpose
‐
build
for
the
mounting
in
caravans,
boats
and
intervention
vehicles.
Please
read
the
mounting
instructions
and
operating
manual
including
the
safety
regulations
completely
prior
to
starting
connection
and
start
‐
up.
The
VOTRONIC
LCD
‐
Thermometer
/Clock
S
is
equipped
with
a
large
LC
display,
which
ensures
very
good
legibility,
even
from
a
distance.
The
integrated
background
illumination
guarantees
a
high
‐
contrast
representation,
even
with
unfavourable
lighting
conditions.
The
thermometer
measures
not
only
the
room
temperature,
but
also
the
outside
temperature
is
measured
by
the
supplied
external
temperature
sensor.
The
third
measuring
input
can
be
used
for
control
of
refrigerator
boxes
or
heat
boxes.
The
third
temperature
sensor
is
separately
available
as
accessory.
The
measuring
ranges
cover
‐
30
°C
to
+70
°C
with
a
resolution
of
0.1
°C.
The
precise
crystal
clock
shows
minutes
and
hours
(24
hours
format),
a
flashing
colon
for
operational
check
and
the
weekday
in
the
lower
row.
The
clock
is
equipped
with
a
power
reserve.
Thus,
it
continues
working
also
at
a
short
‐
time
voltage
loss.
The
DCF
module
(order
No.
2062),
which
is
available
as
accessory,
allows
radio
‐
controlled
operation.
The
unit
distinguished
by
low
current
consumption,
and
it
is
suitable
for
12
V
as
well
as
24
V
board
mains
supply.
For
fire
‐
fighting
vehicles
and
intervention
vehicles
the
second
measuring
input
can
be
used
for
automatic
activation
of
the
clock
and
of
its
illumination.
Appearance
and
dimensions
of
the
display
are
perfectly
adapted
to
the
VOTRONIC
modular
system.
The
VOTRONIC
modular
system
includes
tank
display
units
(fresh
and
sewage
water
as
well
as
feces),
the
LCD
series
(solar
computer,
battery
computer,
ammeter
and
voltmeter),
as
well
as
switch
and
fuse
panels.
Installation
and
Connection:
Choose
a
well
visible
and
easily
accessible
location
in
the
living
area
for
installation
of
the
LCD
thermometer
/
clock.
Direct
sun
radiation
should
be
avoided,
since
the
built
‐
in
temperature
sensor
might
heat
up
strongly,
and
a
measurement
of
the
room
temperature
by
the
module
is
not
possible
any
longer.
The
rear
cutout
opening
should
be
covered
with
electrically
nonconducting
material
to
ensure
efficient
protection
of
the
electronic
system
and
full
utilization
of
the
storage
space,
which
might
be
located
behind.
Installation
place
for
the
external
measuring
sensor:
If
the
external
sensor
shall
be
used
as
outside
temperature
sensor,
direct
sun
radiation
or
heat
radiation
on
the
engine
block/engine
compartment/radiator
preferably
should
be
avoided.
If
the
measuring
input
3
is
used
for
control
of
the
refrigerator
box
or
heat
box,
the
external
temperature
sensor
(required
accessory,
order
No.
2001)
should
be
placed
at
average
height
of
the
container.
Terminals:
Connection
+Batt.,
‐
Batt.
This
connection
is
used
for
the
current
supply
to
the
unit.
The
+Batt.
cable
is
to
be
protected
by
means
of
a
fuse
3
A
.
The
cable
cross
‐
sections
should
be
0.75
mm²,
at
least.
Sensor
connection
The
temperature
sensors
are
connected
to
the
connections
„–Sens.“
and
„+Sens1“,
or
„–Sens.“
and
„+Sens2“.
The
sensors
do
not
have
a
defined
polarity.
For
better
identification,
we
recommend
to
connect
the
black
wire
to
„–Sens.“
and
the
red
wire
to
„+Sens.“.
