Features: Common Screen display -CO2 Technology: infrared (NDIR)Temperature unit ?? or ??F, 24 hours real time monitoring.Detection range: CO2 (400-5000 ppm)CO2 Alarm value: 800ppm-2000ppm ,but this value can be set by users. CO2 Alarm on /off functionPower supply:rechargeable Li-battery 1600mahColor: White+blackMaterial: ABSSize: 70 x 80 x 35mm Package included: 1 x Air quality monitor1 x USB cable1 x English manual
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