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  1. Extech CO240
    Extech CO240 Indoor Air Quality CO2 Meter
    Order #: CO240
    Mfg #: CO240
    Availability: Ships in 2-3 weeks
    $319.99
    Indoor Air Quality CO2 Meter Learn More
  2. Extech CO220
    Extech CO220 Desktop Indoor Air Quality CO2
    Order #: CO220
    Mfg #: CO220
    Availability: Ships in 2-3 weeks
    $269.99
    Desktop Indoor Air Quality CO2 Learn More
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