Dwyer GSTA-N-LCD-FC is a field-replaceable electrochemical nitrogen dioxide transmitter with an accuracy of ±3% FS. It has a wide temperature range of -20 to 50°C and a response time of less than 25s for 90% NO2. The transmitter has a range of 10 PPM for NO2 and 200 and 500 PPM for CO. It features an IP64 enclosure rating, UV resistant polycarbonate housing, and removable terminal block electrical connections. The output signal is switch selectable between 4-20 mA, 0-5 V, or 0-10 V. The coverage area is 5000 to 7500 sq ft, and it can be calibrated via onboard push-buttons or an optional display.