The PCA® 3 is Bacharach's all-new combustion and emissions analyzer for fast and accurate measurement of furnaces, boilers, and appliances. It uses up to 6 electrochemical sensors and features a large color display. The PCA® 3 measures O2, CO, NO, NO2, SO2, and temperature/pressure. It calculates combustion efficiency and excess air and comes in a hard case with probe and sensors. Optional kits include an IrDA printer for reports.