10-in-1 Indoor Air Quality Monitor with CO₂, TVOC, Formaldehyde, Temperature and Humidity Detection

【10-in-1 Smart Air Quality Monitor: Your All-in-One Environmental Guardian】This high-performance portable tester provides precise multi-gas detection. It measures CO₂, formaldehyde, TVOC, benzene, PM2.5, PM10 and more, with a margin of error below ±5%. Ideal for homes, offices and workshops, it lets you check air quality at a glance. 【Smart HD LED Color Display + Visual Alert System】Clearly displays real-time readings, automatically assesses environmental conditions and monitors average concentrations of harmful gases. When readings exceed safe levels, the display changes color to alert you immediately. 【High-Precision Sensors for Stable, Reliable Measurements】Equipped with a powerful chip and professional electrochemical sensors, it uses dedicated detection technology. Smart calibration and stable sensitivity ensure accurate results over time without frequent manual adjustments. 【Simple One-Button Operation】Press and hold the power button for 3 seconds to turn the device on or off; it automatically starts a full detection cycle. Press briefly for 1 second to switch between °C and °F, with no complicated setup. 【Compact, Portable Design + Long Battery Life】The 2000 mAh rechargeable battery provides up to 20 hours of continuous monitoring on a single charge. Lightweight and easy to carry, it lets you check air quality anywhere—in your home, car or living spaces.