CO2-Monitor für Wandhalterung, CO2-Meldergesetz am Luftverschmutzungsmonitor, Dienmern

Remind you to open your vents or air purifiers to improve air quality. (About the alarm Sound: If you don't like the alarm sound, you can press the M key to turn it off/on). 【Wall Mount & Plug And Play】:CO2 Monitor with very large display, It is ideal for installation in a large room.

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