Temtop Air Quality Monitor Indoor PM2.5 AQI TVOC Detector Tester for Home Office, Cost Effective USA Certified Meter

Amazon.com Price: $89.99 (as of 04/09/2023 21:01 PST- Details)

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4-IN-1 MULTI-FUNCTION AIR QUALITY MONITOR. Measure PM2.5, AQI, TVOC, and HCHO, adopts high precision Temtop professional-grade particle sensor and Dart electrochemical sensor.

CALIBRATION AVAILABLE. The HCHO sensor supports easy calibration. To ensure the accuracy of the sensors, make sure it is placed in a ventilated environment (indoor or outdoor) for at least 6 hours before being used for the first time or after being stored for a long time.