HOBO®
MX2300
Series
Data
Logger
Manual
20923
‐
K
The
HOBO
MX2300
series
data
loggers
record
and
transmit
temperature
and/or
relative
humidity
(RH)
in
outdoor
or
indoor
environments.
These
Bluetooth®
Low
Energy
‐
enabled
loggers
are
designed
for
wireless
communication
with
a
mobile
device.
Using
the
HOBOmobile®
or
HOBOconnect®
app,
you
can
easily
configure
the
logger,
read
it
out,
and
view
data
on
your
phone
or
tablet,
or
export
the
data
for
further
analysis.
The
logger
can
calculate
minimum,
maximum,
average,
and
standard
deviation
statistics
and
be
configured
to
indicate
alarms
at
thresholds
you
specify.
The
logger
also
supports
burst
logging
in
which
data
is
logged
at
a
faster
interval
when
sensor
readings
are
above
or
below
certain
limits.
The
Temp
and
Temp/RH
models
have
internal
sensors
while
the
External
Temp/RH,
External
Temp,
and
2x
External
Temp
include
built
‐
in
external
sensors,
offering
a
wide
range
of
solutions
for
monitoring
temperature
and
RH
in
numerous
applications.
Specifications
Temperature
Sensor
Range
MX2301A
and
MX2305
internal
sensors:
‐
40
to
70°C
(
‐
40
to
158°F)
MX2302A
external
temperature
sensor:
‐
40
to
70°C
(
‐
40
to
158°F)
MX2303
and
MX2304
external
sensors:
‐
40
to
100°C
(
‐
40
to
212°F),
with
tip
and
cable
immersion
in
fresh
water
up
to
50°C
(122°F)
for
one
year
Accuracy
±0.25°C
from
‐
40
to
0°C
(±0.45
from
‐
40
to
32°F)
±0.2°C
from
0
to
70°C
(±0.36
from
32
to
158°F)
±0.25°C
from
70
to
100°C
(±0.45
from
158
to
212°F),
MX2303
and
MX2304
only
Resolution
MX2301A
and
MX2302A:
0.02°C
(0.036°F)
MX2303,
MX2304,
and
MX2305:
0.04°C
(0.072°F)
Drift
<0.01°C
(0.018°F)
per
year
Relative
Humidity
Sensor*
(MX2301A,
MX2302A
only)
Range
0
to
100%
RH,
‐
40°
to
70°C
(
‐
40°
to
158°F);
exposure
to
conditions
below
‐
20°C
(
‐
4°F)
or
above
95%
RH
may
temporarily
increase
the
maximum
RH
sensor
error
by
an
additional
1%
Accuracy
±2.5%
from
10%
to
90%
(typical)
to
a
maximum
of
±3.5%
including
hysteresis
at
25°C
(77°F);
below
10%
RH
and
above
90%
RH
±5%
typical
Resolution
0.01%
Drift
<1%
per
year
typical
Response
Time
(typical,
to
90%
of
change)
Temperature
Without
Solar
Radiation
Shield
With
RS1/M
‐
RSA
Solar
Radiation
Shield
With
RS3
‐
B
Solar
Radiation
Shield
MX2301A
internal
sensor
17
minutes
in
air
moving
1
m/sec
24
minutes
in
air
moving
1
m/sec
NA
MX2302A
external
sensor
3
minutes,
45
seconds
in
air
moving
1
m/sec
7
minutes,
45
seconds
in
air
moving
1
m/sec
6
minutes,
30
seconds
in
air
moving
1
m/sec
MX2303/MX2304
external
sensors
3
minutes
in
air
moving
1
m/sec;
20
seconds
in
stirred
water
7
minutes
in
air
moving
1
m/sec
4
minutes
in
air
moving
1
m/sec
MX2305
internal
sensor
17
minutes
in
air
moving
1
m/sec
24
minutes
in
air
moving
1
m/sec
NA
RH
Without
Solar
Radiation
Shield
With
RS1/M
‐
RSA
Solar
Radiation
Shield
With
RS3
‐
B
Solar
Radiation
Shield
MX2301A
internal
sensor
30
seconds
in
air
moving
1
m/sec
40
seconds
in
air
moving
1
m/sec
NA
MX2302A
external
sensor
15
seconds
in
air
moving
1
m/sec
30
seconds
in
air
moving
1
m/sec
30
seconds
in
air
moving
1
m/sec
HOBO
MX2300
Series
Data
Logger
Models:
MX2301A,
temp/RH
MX2302A,
ext
temp/RH
MX2303,
2
ext
temp
MX2304,
ext
temp
MX2305,
temp
Included
Items:
Screws
Cable
ties
Required
Items:
Mobile
device
with
Bluetooth
HOBOmobile
app
for
devices
with
iOS
HOBOconnect
app
for
devices
with
Android™
Accessories:
Solar
radiation
shield
(RS3
‐
B
for
use
with
MX2302A,
MX2303,
and
MX2304
models;
RS1
or
M
‐
RSA
for
use
with
MX2301A
and
MX2305
models)
Mounting
bracket
for
solar
radiation
shield
(MX2300
‐
RS
‐
BRACKET),
for
use
with
MX2301A
and
MX2305
models
Replacement
battery
(HRB
‐
2/3AA)
