AST Model SRZ-CF25F4 Replaces KE-25F4 Oxygen Sensor
AST Model SRZ-CF25F4 is a replacement to Figaro KE-25F4 Percentage Oxygen Sensor. It’s acidic electrolyte formulation makes it compatible with CO2, longer life without signal drift and minimizes periodic calibration requirement. Sensor is designed, developed and manufactured in the USA.
FIGARO Model KE-25F4