The Edan Nellcor SpO2 Module Upgrade (iM3 Nellcor SPO2 module) integrates genuine Nellcor OxiMax pulse oximetry technology into the primary logic board circuit of the iM3 monitor series. This internal component expansion replaces the standard oximetry board to provide enhanced signal filtering during patient movement, low perfusion states, and specialized neonatal tracking. This upgrade requires professional factory assembly at the initial build phase to properly run the high-precision internal calibration protocols.