POC2021-3 is a NDIR(Non-Dispersive Infrared) CO2(carbon dioxide) gas sensor. It uses infrared wave length of 4.26 micrometer to detect a CO2 concentration.  A single IR lamp and single thermopile sensor are optically arranged by precision optical design. It has high accuracy and long lifetime and optional temperature compensation.  It is widely used in Indoor Air Quality monitor, air purifier and building management, automotive, Agricultural HVAC application.

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