Multifunctional 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 make particle measurement more accurate and stable. Features: Multifunctional air quality monitor, detecting formaldehyde, CO2, temperature and humidity in real time. Monitor real-time readings and line graph remotely, changes can be seen directly by hour/day/month/year. When the value exceeds the setting, your smart linkage air conditioner, purifier, humidifier will work automatically, to provide you with a cool and comfortable environment. Easily create a group and share the monitor with your family via TuyaSmart. Once the preset value is reached, an alarm notification will be sent. Built-in precise sensors make particle measurement more accurate and stable. Premium material with fine workmanship and compact size makes it extremely space-saving and discreet. Specifications?: Material: PVC + electronic components Color: White Type?: Wi-Fi/ZigBee (optional) Voltage: 5V Operating current?:?10-496MA Operating 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 * 4.0 cm / 3.7 * 3.7 * 1.6 inch Package Weight: 92g / 3.24oz Package List: 1 * 5-in-1 Air Quality Monitor 1 * USB cable 1 * pin 1 * Manual