BTMETER Formaldehyde Detector PM2.5 PM10 Meter, Indoor Air Quality Tester Monitor HCHO TVOC Particle Dust Air Pollution… Price: $145.99 (as of 04/09/2023 21:01 PST- Details)

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☀ BT-5800D is a professional level sensitive air monitor detector equipped with advanced LASER SCATTERING technology, Accuracy +/- 0.2 only, which means it can deliver more accurate measurement to provide safeguard for you and your family.

☀ Big fan design makes it can increase stronger air circulation, inhale more air samples to collect and analyse, to ensure you the most accurate test result in real time.