Features: [5 in 1]: Intelligent air quality detector, real-time monitoring of 5 environmental parameters such as HCHO, VOC, carbon dioxide, temperature and humidity, protecting family health at all times.[Multiple Sensor]: Built-in semiconductor air sensor and temperature or humidity sensor, sensitive induction, quick detection of multiple gases, comprehensive coverage, more accurate and reliable. [Work with APP]: Connecting to the Tuya APP via WiFi, real-time display of the detection value, so that indoor air pollution or healthy air index easy to read. You can also preset the alarm value, when the detected value exceeds the preset value, it will automatically alarm. [Voice Control]: Work with Tuya App, the detector support voice control, just say a simple to operate, convenient and intelligent.[Intelligent Linkage]: It supports intelligent linkage with air conditioners, air fans, humidifiers, air purifiers, etc. through for Tuya APP to automatically optimize the air environment and maintain a healthy living environment . [Reliable Quality]: High-quality PVC housing, sturdy and fall-resistant, long service time. With multiple vents, the detector has nice ventilation and is more accurate for detection in air quality. [Wide Application]: Small size, portable and practical, it is very suitable for home, office, school, warehouse, agricultural planting, etc. Support 2 installation methods, you can put it on the desktop or mount it . Specifications: Working Voltage: 5V, 1A Working Current: 10-496mA Communication Protocol: ZigBee or WiFi(optional) Working Temperature: -20-85 HCHO Ranges: 0-10.00mg or m VOC Ranges: 0-99.9ppm CO2 Ranges: 350-2000ppm Temperature Ranges: 0-60 Humidity Ranges: 0-95percent note: English version Please note: Slight color difference or difference in kind, does not affect the use, please do not mind, thank you! Material: plastic colour: grey Package Contents: 1 x Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.