HOBOnet®
Wireless
Sensor
Network
RXW
Temperature/RH
Sensor
(RXW
‐
THC
‐
B
‐
xxx)
Manual
24501
‐
A
This
sensor
measures
temperature
and
RH
and
is
designed
to
work
with
the
HOBOnet
Wireless
Sensor
Network
in
which
data
is
transmitted
wirelessly
from
the
sensor
mote
across
the
network
to
the
station
and
then
uploaded
to
HOBOlink®
web
‐
based
software.
With
HOBOlink,
you
can
monitor
sensor
readings,
view
graphs,
set
up
alarms,
download
data,
and
more.
Specifications
Sensor
Temperature
RH
Measurement
Range
‐
40°C
to
75°C
(
‐
40°F
to
167°F)
0–100%
RH
at
‐
40°
to
75°C
(
‐
40°
to
167°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
±0.25°C
from
‐
40°
to
0°C
(±0.45°F
from
‐
40°
to
32°F)
±0.20°C
from
0°
to
70°C
(±0.36°F
from
32°
to
158°F)
±0.25°C
from
70°
to
100°C
(±0.45°F
from
158°
to
212°F)
±2.5%
from
10%
to
90%
RH
typical
to
a
maximum
of
±3.5%
including
hysteresis
at
25°C
(77°F);
below
10%
and
above
90%
±5%
typical
Resolution
0.02°C
(0.036°F)
0.01%
RH
Drift
<0.01°C
(0.018°F)
per
year
<1%
per
year
typical
Response
Time
(typical,
to
90%
of
change)
3
minutes,
45
seconds
in
air
moving
1
m/s
15
seconds
in
air
moving
1
m/s
Wireless
Mote
Operating
Temperature
Range
‐
40
to
70°C
(
‐
40
to
158°F)
Radio
Power
12.6
mW
(+11
dBm)
non
‐
adjustable
Transmission
Range
Reliable
connection
to
457.2
m
(1,500
ft)
line
of
sight
at
1.8
m
(6
ft)
high
Reliable
connection
to
609.6
m
(2,000
ft)
line
of
sight
at
3
m
(10
ft)
high
Wireless
Data
Standard
IEEE
802.15.4
Radio
Operating
Frequencies
RXW
‐
THC
‐
B
‐
900:
904–924
MHz
RXW
‐
THC
‐
B
‐
868:
866.5
MHz
RXW
‐
THC
‐
B
‐
922:
916–924
MHz
Modulation
Employed
OQPSK
(Offset
Quadrature
Phase
Shift
Keying)
Data
Rate
Up
to
250
kbps,
non
‐
adjustable
Duty
Cycle
<1%
Maximum
Number
of
Motes
50
motes
per
one
HOBOnet
wireless
sensor
network
Battery
Type
Two
AA
1.5
V
lithium
batteries
Battery
Life
1
year,
typical
use
Memory
16
MB
Dimensions
Sensor:
45.97
x
11.43
x
10.16
mm
(1.81
x
0.45
x
0.40
inches)
Mote:
16.2
x
8.59
x
4.14
cm
(6.38
x
3.38
x
1.63
inches)
Weight
223
g
(7.87
oz)
Materials
Sensor:
Polyamide
Mote:
PCPBT,
silicone
rubber
seal
Environmental
Rating
IP67,
NEMA
6
Compliance
Marks
RXW
‐
THC
‐
B
‐
900:
See
last
page
RXW
‐
THC
‐
B
‐
868:
The
CE
Marking
identifies
this
product
as
complying
with
all
relevant
directives
in
the
European
Union
(EU).
RXW
‐
THC
‐
B
‐
922:
See
last
page
RXW
Temperature/
RH
Sensor
Models:
RXW
‐
THC
‐
B
‐
900
(US)
RXW
‐
THC
‐
B
‐
868
(Europe)
RXW
‐
THC
‐
B
‐
922
(Australia/NZ)
Included
Items:
Cable
ties
Screws
