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Siemens Carbon Dioxide (CO2) Duct Sensor QPM2100 Features
• Maintenance-free CO2 sensing element based on optical infrared absorption measurement, Non Dispersive Infrared (NDIR).
• CO2 temperature and CO2 humidity-temperature multisensor.
• No recalibrations required.
• Operating voltage 24 Vac.
• Signal outputs 0 to 10 Vdc.