Indoor Air Quality Monitor for TUYA WiFi Smart PM2.5 Formaldehyde Testing 7 in 1 Calendar Function Air Quality Detector Function Function: 1. Scope of application: indoor air quality monitor is suitable for detecting PM2.5, temperature, humidity, TVOC, carbon dioxide, formaldehyde, multi-functional and wide range of applications2. WIFI Module: The WiFi air quality detector has a WIFI module which can use remote monitoring with mobile phone APP3. Air Vent Design: The intelligent air quality monitor has hundreds of air vents on the back, accelerating the convection between the air and the machine for effective detection, ensuring heat dissipation effect4. Convenient and practical: The intelligent carbon dioxide value tester uses a blank solid-state TVOC sensor to detect air quality, temperature, humidity5. ABS material: The smart air quality monitor is made of ABS material, which is wearable and durable and can be used with confidence Specification: Item type: Indoor air quality monitor Material: ABS PM2.5 measurement range: 0-999ug/m3 PM2.5 resolution: lug /m3TVOC measurement range: 0-3mg/m3TVOC resolution: 0.001mg/m3CO2 measurement range: 400-5000PPMHCHO measurement range: 0-3mg/m3HCHO resolution: 0.001mg/m3Temperature measurement range: 0-60 Humidity meter range: 0-99 %RHCharger interface: MIC USB Battery: 1200MAH lithium battery (comes with built-in battery) Product size: Approx. 90 x 70 x 40mm / 3.5 x 2.8 x 1.6in Weight: Approx. 251g / 8.6oz Package list: 1 x Indoor Air Quality Monitor 1 x Connection Cable 1 x User manual How to use: 1. Press and hold the "on/off" button for 3 seconds to turn on/off, wait for a few seconds, then show the current air quality parameters2. TFT color screen, show the following detection data: pm2.5 air parameters, TVOC air parameters, CO2 air parameters, HCHO methyl fermentation data, temperature and humidity data, air level indication, etc.3. Rechargeable lithium battery, USB MIC interface, charging status flashing, full stop flashing; Power indication, different power, different display grid4. WIFI part of the instructions: single button device version, long press the boot, press the button for 5 seconds after long button to network mode, the interface shows "WIFI config ready", then release the phone, waiting for the network process. Please note that after pressing the button for 3 seconds, there will be a message "release key" Download " for TUYA APP", register with your mobile phone and log in