CO2 Monitor with 3 Adjustable Volume for Alerts & 3 Adjustable Backlight, Accurate Photoacoustic Sensor for Temperature and Humidity & Monitoring Indoor CO2 Air Quality

CO2 METER DETECTION, SWITCH °C/°F – Great item for any home to monitor the weather and air quality! Real-time CO2 value, temperature and humidity, CO2 history chart, CO2 Concentration range, 3 Adjustable Volume for Alarm Setting & 3 Adjustable Backlight, Max/Min Data, Low battery indicator.
HIGH-PRECISION SENSIRION SENSOR – Equipped with Swiss-made Photoacoustic Sensor provides precise and reliable readings, which provides you with peace of mind about the air in your house. CO2 detection range：400～5000PPM,accuracy：+/- 5% + 50PPM. Temperature range: 14.2°F ~ 122°F, Humidity range: 20% to 95 %.
IMPROVE VENTILATION – Very useful for high concentration of poor air quality and cooking indoors and it’s going to indicate to open a window/door to refresh the area to get the levels lower.
DETECT RISE AND RECREASE IN CARBON DIOXIDE LEVELS – Perfect for any person wanting to monitor air quality! Elevated CO2 can cause symptoms like headaches, drowsiness, allergies and difficulty concentrating, to control air quality at home or work!
USB CHARGING OPTION & BATTERY BACKUP & ADJUSTABLE BACKLIGHT – It’s plugged in which allow the multi brightness display to stay on at all times, in case you prefer. Either set it on tabletops, or mount it at the wall. 3 x AAA Battery(not included) for Backup & outside manual calibration.