3 in 1 Real time CO2 Detector Plug in USB,CO2 Monitor Sensor with 4 Color Lights Alarm,Air Quality Monitor,℃/℉ Temperature and Humidity Tester Meter,Carbon Dioxide Detector for Indoor,Home,Office

【Note】1. This instrument is suitable for long-term air monitoring. Due to the sensitivity of the sensor, it needs to wait for the value to stabilize before reading, rather than immediately, which usually takes a few minutes. 2. After starting the machine, the temperature displays ℃ and needs to be switched to ℉ by pressing the on button. 3. This instrument is suitable for household air detection with slightly lower accuracy. If you need a more accurate instrument, please choose another one.
【℃/℉ switching】Press the ON/OFF key ON the right twice to set the temperature Unit: °C/°F” conversion, long press 2 seconds about shutdown.
No need to calibrate after starting up, work and detect automatically. The sensors of some models work intermittently which wont affect the product itself.Widely used in indoor homes, educational institutions, fitness venues, and offices
There is a protective film on the product screen.Before use, please remove the film on the screen surface first,this will make the screen clearer
CO2 detection range: 400-5000ppm
Temperature measurement range: 0~50 ℃
Humidity measurement range: 0-99% RH
4-color LED display and real-time data display
External USB DC5V Power supply: Connect USB DC5V Or DC mobile power supply, can be used all the time, use the battery The icon shows full power status.Note: USB DC5V is recommended because of high power consumption of detector External power supply.
DC3V battery: Two AAA 1.5V batteries (not include in package)are installed in the battery box of the back shell, which can be used continuously for a few minutes. When choosing battery power, Battery symbol shows the actual battery level. When the battery is low, the detector will automatically shut down.