Dwyer GSTA-C-FC Carbon Monoxide Transmitter is a reliable and accurate device for monitoring CO and NO2 levels. Its drift rate is less than 5% per year, and it has an ambient temperature range of -4 to 122°F. The transmitter has a field replaceable electrochemical sensor with a 2-year lifespan. It can be powered by current or voltage output and has a quick response time. The enclosure is IP64 rated and made of UV resistant polycarbonate. It has a coverage area of 5000 to 7500 sq ft and offers switch selectable output signals. Calibrating and adjusting the transmitter is easy with push-button controls or the optional A-449 display.