Dwyer GSTA-N-D-FC is a Nitrogen Dioxide Transmitter with a drift of less than 5%. It has an accuracy of ±2% FS for CO and ±3% FS for NO2. The transmitter operates on 10-35 VDC, 15-35 VDC, or 15-29 VAC power requirements. It has a fast response time of less than 45s for CO and less than 25s for NO2. The range for CO is 200 PPM and 500 PPM, while NO2 has a range of 10 PPM. The sensor is field-replaceable and enclosed in a UV-resistant glass filled polycarbonate housing with an IP64 rating. The unit operates in temperatures ranging from -4 to 122°F (-20 to 50°C) and has an adjustable resolution of 1 PPM for CO and 0.1 PPM for NO2. The transmitter is compatible with different output signals, including switch-selectable 4-20 mA, 0-5 V, and 0-10 V options. It covers an area of 5000 to 7500 sq ft and has zero and span adjustments via pushbutton. The storage temperature limits for best sensor life are 32 to 68°F. Calibration can be done through onboard push-buttons or with the optional A-449 display. Suitable for gas monitoring applications involving Carbon Monoxide and Nitrogen Dioxide.