PTH-12 Infrared Carbon Dioxide Detector Portable Temperature And Humidity Air Quality Monitoring Instrument 1. Cold, warm, dry and wet, clear at a glance 2. Temperature and humidity monitoring 3. Sound and light alarm, comfort expression + indicator light 4. Honeycomb vent, one port, two functions; the vent of the product can detect the concentration of CO and accelerate the heat dissipation of the product 5. LCD large high-definition display screen, the backlight is clearly visible at night 6. Backlight dual mode, short light for 10 minutesconstant light 7. Easy and convenient, two placement methods, with a tether hole on the top of the product, and a folding stand on the back 8. Working temperature: 0-50 degrees Celsius 9. Measuring range: 40 square meters 10. Scope of application: kitchens, mines, chemicals, power plants, metallurgy, underground pipelines and other places 11. Charging voltage: 5V1A 12. Battery capacity: 2400mah 13. Power supply mode: USB chargingbuilt-in lithium battery 14. Size: 83 x 83 x 32mm 15. Weight: about 150g