Dwyer GSTA-C Carbon Monoxide Transmitter is a reliable and accurate component for monitoring CO and NO2 levels. It has a drift of less than 5% per year, an ambient temperature range of -4 to 122°F, and an IP64 enclosure rating. The field replaceable electrochemical sensor has a 2-year lifespan. It offers multiple power options and response times of less than 45 seconds for CO and less than 25 seconds for NO2. It has a range of 200 or 500 PPM for CO and 10 PPM for NO2. The transmitter has a resolution of 1 PPM for CO and 0.1 PPM for NO2. The electrical connections are removable and it provides various output signals. It covers an area of 5000 to 7500 sq ft. With push-button and optional A-449 display calibration, this transmitter is a standout choice for CO and NO2 monitoring.