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Co2 sensors 24vac/dc Voltage

View Details Siemens QPA2002D Room sensor CO2 and VOC with Display, 0 to 10V  | Blackhawk Supply
$478.06
each
View Details Siemens QPA2060 Room Sensor CO2 and Temperature, 0 to 10V  | Blackhawk Supply
$407.12
each
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