Photo 1 of VQP Intelligent O3 Ozone Detector Analyzer, Portable Outdoor Indoor Air Quality Meter, Temperature Humidity Gauge with LCD Screen, Adjustable Alarm Threshold

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Photo 1 of VQP Intelligent O3 Ozone Detector Analyzer, Portable Outdoor Indoor Air Quality Meter, Temperature Humidity Gauge with LCD Screen, Adjustable Alarm ThresholdPhoto 2 of VQP Intelligent O3 Ozone Detector Analyzer, Portable Outdoor Indoor Air Quality Meter, Temperature Humidity Gauge with LCD Screen, Adjustable Alarm Threshold