This product is no longer available. Some accessories, replacement parts, or services may still be available.
CWB100 900 MHz Wireless-Sensor Base
Services Available
Repair No
Calibration No
Free Support Yes


The CWB100 is the master radio in a Campbell Scientific wireless-sensor network. It polls and stores data from up to 50 wireless sensors, and then passes that data to a datalogger. Its internal radio has a 902 to 918 MHz frequency range, which is used in the USA and Canada.

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Beneficios y características

  • Internal frequency-hopping, spread spectrum radio provides longer range and less interference
  • Polls and stores data from up to 50 wireless sensors
  • Configurable to fit your application


Descripción técnica

The CWB100 base station is configured using an A205 CWS to PC Interface and Campbell Scientific’s Wireless Sensor Planner, Network Planner or Device Configuration Utility software. The datalogger is programmed to interface with the CWB100 and determine a polling interval. After the polling interval has been received, the base station uses that information to poll the sensors prior to being polled by the datalogger.

Why Wireless?

There are situations when it is desirable to make measurements in locations where the use of cabled sensors is problematic. Protecting cables by running them through conduit or burying them in trenches is time consuming, labor intensive, and sometimes not possible. Local fire codes may preclude the use of certain types of sensor cabling inside of buildings. In some applications measurements need to be made at distances where long cables decrease the quality of the measurement or are too expensive. There are also times when it is important to increase the number of measurements being made but the datalogger does not have enough available channels left for attaching additional sensor cables.


Power Source Data logger
Voltage 4.5 to 22 Vdc
Operating Temperature Range -25° to +50°C
Operating Relative Humidity Range 0 to 100%
Standby Typical Current Drain < 1 mA (@ 12 Vdc)
Receive Typical Current Drain 10 mA (@ 12 Vdc)
Transmit Typical Current Drain 20 mA (@ 12 Vdc)
Communication Serial protocol or USB
Terminal Block Connector Bi-directional serial data logger connection
USB Port Computer connection for configuration
Antenna Connector RPSMA antenna connection
Memory Capacity Can store data table for up to 50 wireless sensors.
Dimensions 10.8 x 4.4 x 4.4 cm (4.25 x 1.75 x 1.75 in.)
Weight 140 g (5 oz)

Internal 25 mW FHSS Radio

Frequency 902 to 918 MHz
Where Used US and Canada
FHSS Channel 50
Transmitter Power Output 25 mW (+14 dBm)
Receiver Sensitivity -110 dBm (0.1% frame error rate)
Standby Typical Current Drain 3 μA
Receive Typical Current Drain 18 mA (full run)
Transmit Typical Current Drain 45 mA
Average Operating Current 15 μA (with 1-second access time)
Quality of Service Management RSSI
Additional Features GFSK modulation, data interleaving, forward error correction, data scrambling, RSSI reporting


Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR1000 (retired) The CR1000 datalogger must have data logger OS version 21 or higher.
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR295X (retired)
CR3000 The CR3000 datalogger must have data logger OS version 21 or higher.
CR6 The CR6 datalogger must have data logger OS version 4.0 or higher.
CR800 The CR800 datalogger must have data logger OS version 21 or higher.
CR850 The CR850 datalogger must have data logger OS version 21 or higher.
CR9000X (retired)

Additional Compatibility Information

Data Logger Considerations

The data logger is programmed to interface with the CWB100 and determine a polling interval. The sensors make their measurements as they are polled. The base station polls all sensors and stores the collected data early enough that it can transfer the data as soon as the data logger requests it. This minimizes the amount of time the data logger needs to wait for a response from the network through the CWB100 base station.

At the start of each polling interval, the data logger polls the base station, and sensor values are transferred to the data logger for storage. This method of data transfer from the sensors to the data logger provides the fastest and lowest power method available.


CWB100 Firmware v.1.02 (708 KB) 10-08-2012

Latest firmware for the CWB100.  

Ver historial de revisiones

CWB100 USB Driver () 01-01-2014

Windows USB drivers for the CWB100 are installed via the Device Configuration Utililty. In the Device Configuration Utility, click on the link "install the device driver for the CWB100" in the main body of text for the CWB100.

Note: Driver must be installed before connecting the CWB100 to your computer.


Wireless Sensor Planner v.1.7 (30.5 MB) 08-08-2013

The Wireless Sensor Planner is a tool for use with Campbell Scientific wireless sensors.  It assists in designing and configuring wireless sensor networks.

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