The Philips M3015B CO2 extension module cannot be used as a stand alone unit. It will not directly connect to a Philips monitor. It must be connected to a MMS, X2, MP2, MMX, or X3 to work properly. This module has a MSL connector going to the monitor and then another connecting it to the patient module. Sidestream CO2, dual pressure, and temperature come standard on these units. We see sidestream CO2 failures including occlusion, leak test failures, and CO2 equipment malfunctions. We also see communication and power related issues.