The Levenhuk Wezzer PLUS LP90 is a compact CO₂ detector that can also measure temperature and humidity. This small device alerts you if humidity and CO₂ levels are considered too high or too low, which can reduce comfort when spending time in the affected indoor spaces. If the concentration of carbon dioxide exceeds the recommended level for a well-ventilated room, this gadget alerts you that it is time to air the room. Digital indicators are displayed on the colour LCD screen, and audible alerts are also available. If preferred, the buzzer can be switched off.
Another useful feature of the Levenhuk Wezzer PLUS LP90 CO₂ detector is the history of the maximum and minimum values measured. Furthermore, the device calculates the average CO₂ level every 15 minutes over an 8-hour period. This helps to determine whether there is enough oxygen in the room whilst you are asleep. By regularly analysing the data and following the ventilation recommendations, you can create a more comfortable atmosphere in any room, be it a bedroom, a children’s room or an office.
This device is powered via the mains (an AC adaptor must be purchased separately).
Key features:
- 3-in-1 gadget: thermometer, hygrometer, CO₂ detector
- Elegant, minimalist design: a hemispherical tabletop device with an LCD screen
- Alerts you when humidity and CO₂ levels exceed the thresholds
- CO₂ level history: maximum, minimum and average values
The kit includes:
- CO₂ sensor
- USB cable
- User manual and warranty certificate
| Brand | Levenhuk Inc., USA |
| Warranty, years | Lifetime |
| EAN | 4620137483222 |
| Package dimensions (WxDxH), cm | 13x12x7 |
| Shipping weight, kg | 0.24 |
| Intended use | indoors |
| Type | thermo-hygrometer |
| Built-in features | thermometer, hygrometer, CO₂ sensor |
| Design | tabletop, digital |
| Application | for domestic use |
| === Separator === | Hygrometer (air humidity) |
| Unit of measurement | % (RH) |
| Measurement range | 20% to 95% |
| Measurement resolution | 1% |
| === Delimiter === | Thermometer (temperature) |
| Unit of measurement | °C, °F |
| Indoor measurement range | 0…+50 °C (+32…+122 °F) |
| Measurement resolution | 0.1 °C |
| === Delimiter === | General specifications |
| Screen type | colour |
| Number of screens | 1 |
| Power supply | 5 V, 500 mA, AC adaptor (not included) |
| Housing | plastic |
| Available with backlight | True |
| Illumination | Yes |
| Additional features | CO₂ measurement range: 400–5000 md (ppm), alerts for CO₂ and humidity limits |



