Home CO2 Detector Meter for Hanging Air Quality Detector PM2.5 Tester

Detection range: PM2.5 (0-999 ug/M³), CO2 ( 400-5000 ppm). PM2.5 Sensor technolology : La-ser Scattering. Detection range: PM2.5 (0-999 ug/M³) CO2 ( 400-5000 ppm). CO2 Technology : ( NDIR). CO2 Alarm value : 1000ppm default ,but ,800ppm-2000ppm ,but this value can be set by users.

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