Air Quality Monitor, Air Meter for Testing HCHO TVOC, Indoor Formaldehyde(Hcho) Detector, Portable, Simple to Use, Great…

Accuracy detection: Test indoor Formaldehyde(HCHO) and TVOC Volatile Organic Compound Gas, through the primary of semiconductor gas sensors which make it more accuracy.
One key operation: The palm-sized portable air detector is easy to carry. Simplified design with one key operation make it easy to make use of.
Sound and light alarm: The LED lights red, yellow and green respectively represent : Poor, normal and excellent. When the air quality is poor, the buzzer will alarm.
Power reminder: By 3 LED lights to display the remainder powers. With 2pcs AA alkaline batteries.
Health assistant: Air quality monitor is perfect for helping us keep in mind the air quality in home, bedrooms, kitchens, hotels, offices and more. Especially if you end up in a new house.
Learn how to use: Enter the environment you need to detect, press and hold to turn it on, look forward to the data to display after a countdown of 180 seconds, if it shows green, do not be concerned, the air quality is excellent.