PLX Wideband A/F Sensor & Module (no display unit)



9 in stock (can be backordered)

SKU: E130003A Category: Tags: , , , , , , ,

Product Description


The PLX Air Fuel Ratio Sensor Module accurately measures the wideband air fuel ratio (AFR) of any internal combustion engine. It comes with a Bosch LSU 4.2 wideband oxygen sensor. Up to 32 Sensor Modules can be daisy chained together from the PLX iMFD line for modular tuning and can be connected to any PLX Multi Gauge through the digital serial output port. This Sensor Module can also be used as a stand alone unit capable of interfacing with third party hardware where both the digital output and the analog output are available simultaneously. The SM-AFR works with gasoline, bio diesel, ethanol, methanol, E85, LPG, and CNG. Advanced soft start technology prolongs the O2 sensor life. The SM-AFR never needs to be calibrated and is accurate to 0.1 AFR with a tuned critically damped controller circuit for an ultra fast reaction time. The SM-AFR has a effective measurement range of 0.68 – 1.36 Lambda. It is also capable of reporting lean readings all the way up to free air with a DM-6 Multi Gauge.

  • No Calibration required
  • Soft start technology
  • 2 analog outputs
  • 1 digital input, 1 digital output
  • Bosch LSU 4.2 Sensor
  • Compatible with multiple fuels
  • Sensor is hand tested
  • Digital precision


This product has plug and play compatibility with all the PLX products sold by ModdBox.


Physical Dimensions: 2 x 2.875 x 1.125″ (52 x 75 x 28mm) L x W x H
Technology: PLX Critical Response Technology, Fast Response PID
Accuracy: < 0.1AFR (Gasoline) Wideband, < 0.2AFR (Gasoline) Narrowband
Measurement Range: 10-20 AFR (Gasoline)
0.68 – 1.36 lambda (Gasoline)
Analog Outputs: Wideband Linear 0-5V,
Narrowband 0-1V (Driving Current 20mA)
Operating Voltage: 9V-20V
Power Consumption: 20 Watts (Max), 13 Watts (Typical)
Power Supply Technology: High Efficiency Switching with Soft Start Technology
Operating Temperature: 0 – 85 Deg Celsius
Sensor: One Bosch LSU 4.2
Enclosure: Extruded Aluminum


Prices are in USD.  This product ships from the USA.  US customers are not charged tax.  Canadian customers are not charged tax, but duty and brokerage fee may apply. 

Additional Information

Weight 1.2 kg
Dimensions 20 x 20 x 15 cm