ApexGear Multifunctional Air Quality Monitor, Detects CO2 HCHO TVOC Temp Humidity, High Precision Indoor Home Air Tester

・8-in-1 Comprehensive Indoor Air Detection: This multifunctional air quality monitor simultaneously measures CO2, HCHO, TVOC, ambient temperature and humidity. Equipped with greenhouse compensation calibration and air convection sensing technology, it delivers stable and accurate air data, helping you fully know indoor air conditions all the time.

・3-Color Grade Indicator & Large Clear Screen: Designed with 3-color visual grading based on CO2 concentration, green for good air, yellow for acceptable and red for poor air. The large digital screen displays all readings clearly at a glance, so you can quickly judge whether indoor ventilation is needed for comfortable breathing.

・Simple One-button Control with Multiple Settings: Featuring easy single-button operation: long press to power on/off, single tap switches ℃ and ℉, double tap turns the beep alert on or off. The straightforward layout requires no complicated setup, friendly for all family members including elders and beginners.

・Sound Alert Notification for Air Quality Reminder: Built-in sound notification function will trigger beep reminders when air indicators exceed healthy standards. It timely reminds you to open windows for ventilation, effectively preventing discomfort caused by poor indoor air in bedrooms, offices and living rooms.

・Rechargeable Battery & Type-C Charging Design: This air quality monitor has a built-in 1600mAh rechargeable lithium battery, supporting up to 10 hours of continuous working time per full charge. Universal USB Type-C port enables convenient charging, supporting both portable wireless use and plug-in stationary placement indoors.