HOBO RXW-TMB-1, RXW-TMB-6 Specifications

HOBOnet® Wireless Sensor Network

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RXW Temperature Sensor (RXW-TMB-1-xxx and RXW-TMB-6-xxx) Manual

This sensor measures temperature and is designed to work with the HOBOnet (HOBO® RX)
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

Measurement Range -40° to 100°C (-40° to 212°F)

RXW Temperature
Sensor

Models:

• RXW-TMB-1-900 and
RXW-TMB-6-900 (US)

• RXW-TMB-1-868 and
RXW-TMB-6-868
(Europe)

• RXW-TMB-1-921 and
RXW-TMB-6-921
(Taiwan)

• RXW-TMB-1-922 and
RXW-TMB-6-922
(Australia/NZ)

Included Items:

• Cable ties

• Screws

Accuracy ±0.25°C from -40° to 0°C (±0.45°F from -40° to 32°F)

Resolution 0.02°C (0.036°F)

Drift <0.01°C (0.018°F) per year

Response Time (typical, to
90% of change)

ireless Mote

perating Temperature

Range

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

Wireless Data Standard IEEE 802.15.4

Radio Operating
Frequencies

Modulation Employed OQPSK (Offset Quadrature Phase Shift Keying)

Data Rate Up to 250 kbps, non-adjustable

Duty Cycle <1%

Maximum Number of
Motes

Logging Rate 1 minute to 18 hours

Number of Data Channels 2

Battery Type Two AA 1.5 V lithium batteries

Battery Life 1 year, typical use

Memory 16 MB

Dimensions Sensor: 5.3 x 33 mm (0.2 x 1.3 inches)

Weight Sensor and cable: 7.6 g (0.27 oz), RXW-TMB-1-xxx; 35.2 g (1.24 oz), RXW-

Materials Sensor: Stainless steel waterproof tip

Environmental Rating Sensor and cable: Immersion in water up to 50°C (122°F) for 1 year

ompliance Marks

±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 minutes, 30 seconds in air moving 1 m/sec

-40° to 70°C (-40° to 158°F)

Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high

RXW-TMB-x-900: 904–924 MHz
RXW-TMB-x-868: 866.5 MHz
RXW-TMB-x-921: 921 MHz
RXW-TMB-x-922: 916–924 MHz

Up to 50 wireless sensors or 336 data channels per one HOBO RX station

Cable length: 0.3 m (1 ft), RXW-TMB-1-xxx; 1.8 m (6 ft), RXW-TMB-6-xxx
Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)

TMB-6-xxx
Mote: 223 g (7.87 oz)

Mote: PCPBT, silicone rubber seal

Mote: IP67, NEMA 6

RXW-TMB-1-900 and RXW-TMB-6-900: See last page.

RXW-TMB-1-868 and RXW-TMB-6-868: The CE Marking
identifies this product as complying with all relevant directives
in the European Union (EU).

RXW-TMB-1-921 and RXW-TMB-6-921: See last page.

RXW-TMB-1-922 and RXW-TMB-6-922: See last page.

25547-B

RXW Temperature Sensor (RXW-TMB-1-xxx and RXW-TMB-6-xxx) Manual

Mote Components and Operation

Mounting
Tab

Latch

Eyelet

Ground Wire
Port

Sensor Cable

Sensor Mote Closed, Front Sensor Mote Closed, Back

Mounting Tab: Use the tabs at the top and bottom of the mote

to mount it (see Deploying and Mounting).

Sensor Cable: This is the cable that connects the mote to the
sensor.

Eyelet: Use this eyelet to attach a 3/16 inch padlock to the
mote for security.

Latch: Use the two latches to open and close the mote door.

Ground Wire Port: Use this port to connect a ground wire (see

Deploying and Mounting).

Antenna: This is the built-in antenna for the radio
communications across the HOBOnet Wireless Sensor Network.

LEDs: There are two LEDs to the left of the LCD screen. The
green LED blinks during the process of joining a network,
blinking quickly while the mote searches for a network and
then slowly as the mote registers with the network. Once the
network registration process is complete, the blue LED blinks at
4 seconds to indicate normal operation. If the mote is not
currently part of a network, the blue LED will be off. If the blue
LED is on and not blinking, there is a problem with the mote.
Contact Onset Technical Support.

Battery Holder: The location where the batteries are installed
as shown (see Battery Information).

USB Port: Use this port to connect to the mote to a computer
via USB cable if you need to update the firmware (see Updating

Mote Firmware).

Button: Push this button for 1 second to illuminate the LCD or 3

seconds for the mote to search for an RX Wireless Sensor
Network to join (see Adding the Mote to the HOBOnet Wireless
Sensor Network).

LEDs

Battery Holder

Antenna

LCD Screen

Button

USB Port

Sensor Mote Opened

LCD Screen: The mote is equipped with an LCD screen that

displays details about the current status. This example shows all
symbols illuminated on the LCD screen followed by definitions
of each symbol in the table.

LCD Symbol Description

The battery indicator shows the approximate battery
charge remaining.

This is a signal strength indicator. The more bars, the
stronger the signal between motes. If there is no x
icon next to the signal strength indicator, then the
mote is part of a HOBOnet Wireless Sensor Network.

An empty signal strength icon plus the x icon
indicates that the mote is not currently part of a
network. See Adding the Mote to the HOBOnet
Wireless Sensor Network for details on how to add a
mote to the network.

When the mote is in the process of joining a
network, the signal strength icon will blink and then
the bars in the icon will cycle from left to right. The x
icon will blink during the last step in the network
registration process (see Adding the Mote to the
HOBOnet Wireless Sensor Network for details).

This indicates a problem with the sensor itself (the
mote is operational). Check the sensor and make any
adjustments to it as needed. Contact Onset
Technical Support if the problem persists.

Adding the Mote to the HOBOnet Wireless
Sensor Network

The mote must join a HOBOnet Wireless Sensor Network
before it can begin measuring temperature and transmitting
data. This requires accessing the station and the mote at the
same time so it is recommended that you complete these steps
before deploying the mote.

Important: If you are setting up a new station, follow the
instructions in the station quick start before setting up this
mote (go to www.onsetcomp.com/support/manuals/24380­man-rx2105-rx2106-qsg for RX2105 and RX2106 stations or go
to www.onsetcomp.com/support/manuals/18254-MAN-QSG­RX3000 for RX3000 stations).

To add a mote to the network:

1. If the LCD is blank on the station, press any button to wake
it up.

1-508-759-9500 (U.S. and International) 2 www.onsetcomp.com
1-800-LOGGERS (U.S. only)