Noyafa portable indoor air quality tester with formaldehyde detector

Multifunctional: 4-in-1 air quality tester for indoor air monitor. HCHO detection, TVOC monitor, temperature, and humidity measures are available with JMS17. Test 4 values simultaneously. Accurate: 99.99% accuracy is guaranteed for measurement. Equipped with high-performance chips. Never let go of any air pollution at home or office. Handy & Efficient: Press 2 buttons only to run an immediate air quality test. The buttons, the interface, and the values are easy to understand. No learning curve. Compact & Portable: With a compact and lightweight design, JMS17 is a handheld portable air quality tester for any room. Live & 24/7: Supports real-time testing for indoor air gases. Also, with easy setup, it will continue to monitor and record the air quality levels of a room 24/7. No manual steps anymore. Safe: An instant alarm on the screen tells the status of air quality, Good, Bad, or Worst. Easy for beginners to know what the results mean. Silent: No noise when testing indoor air quality. Never interrupt sleeping, studying, and working in the room. Affordable: Compared to demanding items on the market, JMS17 is a good combination of performance and price. With just a few bucks, a powerful and handy air quality tester is available. -- Model: JMS17 Display screen: Color LCD Real-time display: Values & Results (Good, Bad, & Worst) Real-time measurement: HCHO (mg/m3 PPM), TVOC (mg/m3), temperature (°C) and humidity (%) Record measurement: Supports data playback of 200 Point*5 pages. Formaldehyde meter:: 0.00 - 5.00 PPM / 0.00 - 6.25mg/m3 Organic matter meter: 0.0 - 10.0mg/m3 Temp & Humi: 0-50°C, 10-90%RH Backlight: Yes Silence Mode: Yes Calibration remind: First use & reuse after 12 hours. Calibration of TVOC sensor: The zero point value will be refreshed after 10 seconds. Speed: Fast (0.5s), normal (1s), and slightly slow (2s). Auto-off: 5, 10, 30 Mins & Never TVOC: Yes Power: 3.7v polymer lithium-ion battery Dimension: 150*67*25mm --