Lambda Wideband Controller WB101

$USD 80.0

Out of stock

SKU: wb101 Category:


The WB101 combines an accurate, fast response wideband AFR (Air Fuel Ratio) controller with a Bosch LSU4.9/4.2 wideband oxygen sensor. The wideband controller works with gasoline, bio diesel, ethanol, methanol, E85, LPG, and CNG. It includes two analog outputs 0-5V for interfacing with 3rd party devices, one CAN bus for interfacing with our aftermarket ECU or Megasquirt family ECUs and one USB for PC communication. The analog output is ideal for interfacing with aftermarket ECU’s and data loggers. The second output is ideal for stock narrowband oxygen sensor replacement where the simulated narrowband analog output is fed back into your ECU to make it operate as if the stock narrowband oxygen sensor is still installed while running the WB101 setup. All two outputs can be used simultaneously.


  • Single wideband controller supports Bosch sensor LSU4.9/4.2
  • Compatible with all fuel types
  • All analog inputs and outputs are 12bits resolution
  • Ability to calibrate O2 sensor for maximum accuracy
  • PID heater and pump current control.
  • Integrated 3 color status led for operation status and fault diagnostic
  • 2 programmable linear 0-5V analog output
  • Analog outputs can be set as high impedance during sensor heating or sensor fault.
  • Power circuit protected with re-settable fuse
  • CAN bus enabled
  • USB port
  • Comes with 1 meter harness, 1 meter sensor connector and USB cable.



Operating Voltage 9.8V to 16V DC
Input Current, O² heater initial warm-up 2.0A nominal, 3A max
Input Current, O² normal operation 0.8A nominal, 1.1A max


Operating ambient temperature 0° to 140° F (-17.78° to 60° C)
Storage ambient temperature -40° to 185° F (-40° to 85° C)
Water resistance Splash resistant, non-submersible


Compatible Types Boschâ„¢ LSU4.2 & Boschâ„¢ LSU4.9
Boschâ„¢ Heater Control Digital PID via pump-cell impedance
Lambda .5 to 8.0
Air/Fuel Ratio 7.35 to 117 (gasoline), Fuel Type Programmable
For Lambda Accurate to +/- .007 (.1 AFR)

Operation Time

Heating time < 10 S
Response time 20 mS
Analog 2, 0-5VDC, 12 bit resolution, programmable
USB USB port to communicate with PC
CAN bus High speed CAN bus 1Mbit/sec
Dimensions 80 x 60 x 23.8 mm


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