Dwyer GSTC-C-LCD-FC Carbon Monoxide Transmitter is a reliable and accurate device for monitoring CO and NO2 levels. With a drift of <5% per year and an accuracy of 2% FS for CO and 3% FS for NO2, it provides precise measurements. The transmitter operates on a power requirement of 10-36 VDC or isolated 21.6-33 VAC, drawing only 5.7 mA @ 24 VDC. It has a quick response time of <45s for CO and <25s for NO2. The sensor has a field replaceable electrochemical design with a typical lifespan of 4 years. The device can withstand a wide range of temperatures (-4 to 122°F) and has an enclosure rating of IP64. It offers BACnet MS/TP, MODBUS RTU, or MODBUS ASCII communication protocols. The coverage area is typical for 5000 to 7500 sq ft. The transmitter features pushbutton zero and span adjustments and can be calibrated via pushbuttons using an auxiliary display. The device is made of UV resistant glass filled polycarbonate and has removable terminal blocks for electrical connections. It provides a resolution of 1 PPM for CO and 0.1 PPM for NO2. The storage temperature limits for best sensor life are 32 to 68°F. The calibration is field selectable, and the span gas concentration can be adjusted.