Available with both NO and NO2 sensors, Model E4500 provides low NOx measurements with 0.1 ppm resolution and accuracy under 100 ppm NOx. Unit features dilution pump for CO auto-range measurements up to 50,000 ppm, built-in printer, automatic data saving feature, and internal data memory for up to 2,000 tests. Equipped with USB and Bluetooth, Model E4500 is suited for emissions monitoring, maintenance, and tuning of boilers, burners, engines, furnaces, turbines, kilns, and incinerators.