AK3 Portable CO2 Air Quality Formaldehyde Carbon Dioxide Detector, AK3 Semiconductor 5 in 1

1. Display mode: smart color screen
2. Working voltage: DC 5V
3. Working temperature: 10-50 degrees Celsius
4. Battery capacity: 1200mA
5. Alarm method: color and sound dual reminder
6. Standby time: 10 hours
7. Security range:
-CO2: 350-2000ppm
-TVOC: 0.000-2.000 mg/m3
-HCHO: 0.000-1.000 mm/m3
-Temperature: 0-90 degrees Celsius
-Humidity: 0-99%RH