Dwyer GSTC-C-D-FC Carbon Monoxide Transmitter is a reliable solution for monitoring CO and NO2 levels. With a drift of <5% per year, it boasts an accuracy of 2% FS for CO and 3% FS for NO2 at the time of calibration. The transmitter has a wide temperature range (-4 to 122°F) and is powered by 10-36 VDC or isolated 21.6-33 VAC. Its field-replaceable electrochemical sensor has a typical lifespan of 4 years and offers a quick response time (<45 s to 90% CO, <25 s to 90% NO2). With an IP64 enclosure rating and UV resistant housing, it is suitable for various environments. The transmitter supports multiple communication protocols and covers an area of 5000 to 7500 sq ft. Via pushbutton or optional display, zero and span adjustments can be made. Calibration is possible using the A-449 auxiliary display.