Air quality monitor WL 1020

Display of air quality by 5 star symbols in 11 levels.
The more star symbols are displayed filled in, the better the measured air quality.

White background lighting with coloured ventilation recommendation:
Yellow lighting = ventilation recommended, red lighting = ventilation strongly recommended
Measurement via a powerful mixed gas (VOC) sensor for monitoring indoor air quality

additional functions:
Indoor temperature display in °C or °F

• Indoor humidity display
• Quartz clock
• 12/24 h time display
• Alarm with snooze function
• Low battery indicator

Energy-saving: the air quality is only displayed while using the USB adapter (not included) to conserve the power of the batteries! Time, temperature and humidity remain visible even in battery mode.

TVOC and CO2 sensor information:
TVOC and CO2 (CARBON dioxide) adopt metal oxide sensors with long-term stability and low drift.
TVOC is the abbreviation of total volatile organic compounds, containing thousands of compounds.
CO2, the sensor does not directly detect CO2 in the environment, but the approximate value derived from other relevant parameters of the sensor.

Composition of air
Under indoor conditions, indoor air consists of approx. 78% nitrogen, approx. 21% oxygen, approx. 1% noble gases and approx. 0.03% carbon dioxide. The concentration of inert gases and carbon dioxide is crucial for assessing the quality of indoor air and its effect on our well-being and health.

TECHNICAL DATA

• Dimensions (WxHxD): 82 x 82 x 25 mm
• Power supply: USB cable inclided(adapter is not included)
• 2 x AAA Micro LR03 (back-up for time/temperature/humidity, not included)
• Temperature measurement range: -9.9 - 50°C 
• Temperature resolution: 0.1°C
• Humidity measuring range: 10-95%.
• Humidity resolution: 1%
• TVOC airborne particle detection range: 0 - 9,999 mg/m3
• CO2 equivalent (Eq.) detection range: 400 - 9.999PPM Eq.