General description Carbon Dioxide (CO2) Detector is designed for real-time and accurate monitoring of CO2 concentration, ambient humidity, and temperature. It features a date and time display, with data updated every 4 seconds. The device is equipped with an independent semiconductor sensor and a large color screen for easy reading. Technical specifications Measurement of CO2, temperature, and humidity Alarm triggers when CO2 concentration exceeds 1000 ppm Power supply: 3 AA batteries (not included) or USB TYPE-C data cable Battery life: up to half a month Usage Suitable for various environments: schools, offices, bars, restaurants, homes, and cars Lightweight and portable design for easy placement