The UEi C20KIT CO and CO2 Analyzer is an ideal tool for measuring CO and CO2 concentrations in any place. Results are quick and fast, and in real time analysis. The sensors and system are made for longevity with a 10 year life expectancy with no sensor replacement needed. Sensor perform very well with the EOS technology. The EM151 provides a simple, time-saving alternative to U-tube pressure measurements. Use the UEi EM151 to measure gas supply and draft pressures in residential or light commercial properties. UEi C20KIT CO and CO2 Analyzer comes complete with: EM151, pressure tubing, BF100, flue probe (KMCP72), protective boot with magnet, and soft carrying case (AC73).