Siemens QPM2100 SKU: QPM2100 $413.64 $1,088.53 Quantity -+ Add to Shopping Cart Limited Factory Stock Details Duct CO2 Sensor, 0-2000 ppm, 0-5V/0-10V/4-20mA Output, 5-Year Warranty ( Minimum Siemens order quantity of $250.) Data Sheet Installation Instructions DetailsData SheetInstallation Instructions Back Duct CO2 Sensor, 0-2000 ppm, 0-5V/0-10V/4-20mA Output, 5-Year Warranty ( Minimum Siemens order quantity of $250.) Back Back