54-49-90 Honeywell MultiPro Replacement O2 Sensor
54-49-90 Honeywell MultiPro Replacement O2 Sensor. Factory OEM replacement sensor for MultiPro O2 sensor.
Replace sensor by opening instrument case, remove old O2 sensor by pulling straight out, replace with new sensor. Reassemble instrument, turn on and allow to stabilize for 60 minutes before establishing span “0” and calibrating span. MultiPro manuals are available for download on request – use “Contact Form” or call 972-985-0883 or email firstname.lastname@example.org.