Multifunctional Air Quality Tester CO2 TVOC Meter Temperature Humidity Measuring Device

Features:
Adopts digital temperature and humidity sensor, high accuracy, stable performance, antijamming ability, low consumption and can provides long service time.
Large LCD display, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly.
℃ and ℉ switchable, and the alarm sound can be on or off according to your demands.
Equipped with environmental quality judgment function, it will display appropriate level according to measuring value.
Built-in 1800mAh capacity lithium battery, easy to recharge it with USB cable.
When the battery is too low, the battery frame flashes to remind you to recharge it.