• 【Wide Application】--- With large screen design, this wall mount air quality meter widely used for testing air quality in office, school, house, hotel, warehouse, gym and etc. ​Better helps you to determine whether open the window for ventilation. Reminder: Because of its large size, it is recommended to use it in larger places
• 【Automatic CO2 Alarm Notification】: The Dienmern air quality monitor can set the CO2 alarm threshold, The alarm threshold range is 800ppm-2000ppm, set a value within this range, Once the CO2 concentration exceeds this value, the alarm will sound. 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)
• 【Six Brightness Adjustable 16 Inches LED Displays and Visualized】: Dienmern 16 inches( 36CMx23CM ) HD LED Full-Color screen displays the Real-Time CO2 concentration,particulate matter PM 2.5, Temperature, and Humidity from the surrounding air, facial expressions and clolor let you know the air quality level in Real-Time. Adjustable LED brightness,You can freely switch the brightness in different environments.
• 【Easy to Use and Simple to Operate】: Under startup state, press 'Up' to increase LED brightness, press 'Down' to reduce LED luminance. Long press the set button (M) until the CO2 value flashes, press up or down to adjust the alarm threshold and press the set button (M) again to confirm the operation. The same method sets the date and time.
• 【Wall Mount & Plug And Play】:CO2 Monitor with very large display, It is ideal for installation in a large room. To protect the environment, the carbon dioxide detector does not use batteries. you can use the 5V/1A adapter (not included) to connect the CO2 detector via the included USB(3M) charging cable. there is no noise during use, and it can be used continuously for 24 hours, allowing you to easily understand the current air quality status and protect the health of you and your family

Internal ref - B14