ApexGear 9-in-1 Indoor Air Quality Monitor, Built-in 3000mAh Battery Rechargeable Multi Gas Detector for Home

・9-in-1 Multifunctional Indoor Air Quality Detector: This all-in-one air quality monitor detects 9 essential indoor indexes simultaneously, including CO2, formaldehyde, TVOC, PM2.5, PM10, AQI, ambient temperature, humidity and real-time clock. It judges air condition via color indicators and emoticons, letting you know indoor air quality clearly at a glance.

・Adjustable Large LCD Screen & Dual Temperature Units: Equipped with a big clear LCD display with 2 brightness modes (light/dark) to fit day and night use. You can switch temperature display between Celsius and Fahrenheit freely, with a wide measuring range from -10°C to 50°C for accurate daily temperature & humidity reading.

・Visual & Buzzer Alarm for Air Quality Reminder: Built-in buzzer and color-coded level lights offer dual alerts when air pollutants exceed safe standards. Four air quality grades (Good/Not Good/Unhealthy/Terrible) matched with facial emoticons simplify result reading, effectively reminding you to ventilate rooms timely.

・3000mAh Battery & USB Dual Power for Continuous Monitoring: Comes with a large 3000mAh rechargeable lithium battery for long standby time. It also supports USB wired power supply to realize 24-hour non-stop continuous air monitoring, no need for frequent charging for daily home and office use.

・Portable Compact Design with High Precision Sensor: Adopts advanced high-sensitivity sensor chip to ensure stable and precise detection results. The lightweight portable body is suitable for bedroom, living room, office and nursery room, easy to place on tabletop or carry around as you need.