This was sold as a "5 In 1 Air Quality Monitor TVOC HCHO Temperature Humidity CO2 Meter" on AliExpress. It appears to be another fake air quality meter using the exact same housing as the fake one tested on the KZread channel by "Outside In". This one has a different display but also appears to be fake.
Here is the link to the other video testing the similar fake meter by KZreadr "Outside In".
• Compare Fake Chinese A...
Here is a 2nd link to another video testing an almost identical fake meter by KZreadr "Tech with Jin - Jin科技".
• Fake CO2 Meter - Teard...
The silver cylinder sensor component appears to be the only sensor that affects the readings for volotile oganic compounds (TVOC), formaldahyde (HCHO), & carbon dioxide (CO2). Since ethanol (alcohol) quickly maxes out the carbon dioxide display it appears this doesn't actually contain any carbon dioxide sensor. Also not shown in this video is that when I held my fingers next to the sides of the silver cylender sensor it also maxed out the reading for volotle oganic compounds, formaldahyde, and carbon dioxide.
The only sensors and readings that appear to be fairly accurate is the cheap humidity sensor (shown in the video as the small square component with the horizonal solder lines across it) and next to it the black two pin temperature sensor (probably a simple thermister).
The purple no name Chinesium 18650 battery has "HONGCI" printed on the wrap and tested as 1043mAh with my LiitoKala Lii-600 battery charger & tester.