LSF4.2 Exhaust Oxygen Switch

The LSF4.2 Exhaust Oxygen Switch is a 4-wire oxygen sensor with an integrated heater. Two wires are for transmitting voltage signals and two wires are for the integrated heater.

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  • Low heating power
  • Short light-off time
  • Low dependency on exhaust gas temperature - stability in varying operating applications
  • Industry leading aging resistance, anti-coating, anti-poisoning in a compact design
  • Compatible with multiple vehicle platforms
  • OEM and ODM capabilities for custom sensors



Heater resistance 9±1.5Ω
Operating voltage 12V
Maximum heating current 1.0A
Accuracy λ=0.93-0.97 ( 350° ): 800±55mv;
λ=1.05-1.10 ( 350° ): 50±30mv;
Response time 600mV-300mV:<125ms
Operating temperature / Exhaust gas temperature 150~930°C
Storage Temperature -40°C~+90°C
Light-off time <15S


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