OEM ETCO2 (end-tidal CO2) module Model C002 is a complete data collection and analysis system for monitoring respiratory CO2 The OEM ETCO2 module is a complete data collection and analysis system for monitoring respiratory carbon dioxide concentration. Advanced technology with high quality, mainly OEM for patient monitors. The OEM ETCO2 includes a miniature CO2 sensor, barometric pressure transducer, sampling flow control and a miniature low-power vacuum pump. A microprocessor collects the sensor data and calculates various real-time parameters: instantaneous CO2 concentration, respiration rate, end-tidal CO2, inspired CO2, inspiration and expiration times. The module is highly configurable to meet most OEM implementation requirements. System specifications such as sampling flow rate and floating point data format can be changed by customer. The host sends commands and receives waveform, breath parameters and command responses on two +5.0V asynchronous serial data lines (TTL or RS232).