User's Manual

Note:
1. Press Power button 5S to power on or power off;
2. When device is alarming, user can press Mute button, after 15s, warning function
will be recovered.
3. Press Mute button for 5S, till there was a short beep, device has turned on or off
Alarm function. When LED is green, means turn off the alarm function; when LED is
off, means turn on the alarm function.
4. To press WIFI button, press it for 5S, till there was a short beep, device will
unbind the mobile APP WIFI connecting. (WIFI version model only)
5. Press C/Fbutton, can switch temperature between ℃ and ℉.
6. Fences all around the product, can make the sensor to fully contact the air.
Alert
Whether the CO2 value exceeds the standard is indicated by the expression icon and indicator
light, as shown in the following table:

Good Normal Bad
400-999ppm 1000-1399ppm over 1400ppm
Alarm 5 times every 15s Alarm 10 times every 15s