The Gas Module SE adds state-of-the-art gas monitoring and analysis capabilitiesto the Passport 2, Spectrum and Spectrum OR vital signs monitors. The Gas ModuleSE with Spirometry measures airway pressures and lung volumes directly at the patientРІР‚s airway. This data, along the loops and numeric data that you need canbe displayed on the Spectrum OR. The Gas Module SE is a breath-by-breath gas analyzer, designed to meet the comprehensive anesthesia monitoring requirementsof virtually every hospital and freestanding surgical center - whatever its size, specialty, or patient base.