Real-time and accurate monitoring of CO2 concentration, PM1.0, PM2.5, TVOC, ambient humidity and temperature.Smartlife/ Tuya APP Monitor. Together we can intelligently control the ventilation system, and at the same time can connect to WIFI to view the recorded data on the mobile phone. So easy and simple. Intelligent color screen display, the numbers are clear, easy to identify and read.In alert mode, alert the user to the environment by changing the color. When the CO2 concentration exceeds 1500PPM, an alarm will be issued to notify you to keep the indoor environment ventilated in time. Multifunction 6 IN 1. It can monitor PM2.5, PM1.0, TVOC, CO2, Temperature and Humidity, with a sensitive laser particle sensor, laser TVOC sensor, and accurate NDIR CO2 sensor. Wi-Fi Enabled & Smartlife/ Tuya APP Smart Control. Smart PT02 can connect to the Internet, works seamlessly with Smartlife/ Tuya App, Set alerts, receiving air quality measurements anytime and anywhere. Wireless IoT Controller: Create a Smart Scene in the Tuya app, make PT02 control the Smart home appliances. First, you should add Smart PT02 and other Smart home appliances to Tuya APP. Then set the conditions. The PT02 monitor will activate Smart Fans, Air Purifiers, or other appliances in response to changes in your home's air quality. Product: Smart Air Quality Monitor Temperature measurement range: -20°C~60°C; ±2°C Humidity measurement range: 5%~95%RH; ±5%RH CO2 measurement range: 400-5000ppm, resolution: 1ppm CO2 measurement accuracy: ±50ppm or ±5% of reading TVOC measurement range: 0~20mg/m³ PM1.0 measuring range: 0~500μg/m³ PM2.5 measurement range: 0~500μg/m³ Working temperature: 0°-50°C Working humidity: 0-95% (non-condensing) Input voltage: DC 12V/2A Single output wiring: RS485/relay for CO2, TVOC, PM1.0, PM2.5, and humidity signal output Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Plug Type :EU Plug,it applies to Indonesia