Multifunction air quality monitor to check formaldehyde, CO2, temperature and humidity index in real time by your phone. Support intelligent linkage, automatically open air conditioner, purifier, humidifier when the value exceeds the setting. Built-in precise sensors, makes particle measurement more accurate and stable. Features: Multifunction air quality monitor, detecting formaldehyde, CO2, temperature and humidity in real time. Monitor real-time readings and line chart remotely, the changes can be seen directly by hour/ day/ month/ year. When the value exceeds the setting, your linkage smart air conditioner, purifier, humidifier will work automatically, to give you a fresh and comfortable environment. Easily create group, and share the monitor with your family via TuyaSmart. Once the preset value was reached, alarm notification will be sent. Built-in precise sensors, makes particle measurement more accurate and stable. Premium material with exquisite workmanship and compact size makes it extremely space-saving and unobtrusive. Specifications: Material: PVC + Electronic Components Color: White Type: Wi-Fi / ZigBee (Optional) Voltage: 5V Working Current: 10-496MA Working Temperature: -20~85 Detection Range: Formaldehyde: 0-10.00mg/m3 CO2: 0-1000PPM Temperature: 0-60 Humidity: 0-95% Item Size: 90 * 35mm / 3.5 * 1.4in Item Weight: 60g / 2.1oz Package Size: 9.5 * 9.5 * 4.0cm / 3.7 * 3.7 * 1.6in Package Weight: 92g / 3.24oz Package List: 1 * 5-in-1 Air Quality Monitor 1 * USB Cable 1 * Pin 1 * Manual