Upgraded 4-in-1 Air Quality Monitor – Portable HCHO/TVOC/Temp/Humidity

About this item

• 【Professional 4-in-1 Detection】Equipped with a premium thick-film semiconductor sensor, this monitor delivers rapid and reliable readings for formaldehyde (HCHO: 0–3.333 mg/m³) and TVOC (0–9.999 mg/m³), plus simultaneous temperature (°C/°F) and humidity display. Sensitive to carbon monoxide, carbon dioxide, alcohol, and odors, it provides comprehensive protection against invisible indoor threats—perfect for homes, nurseries, offices, RVs, and basements
• 【Intelligent 4-Level Alarm & Instant Health Index】No more guessing! The large backlit LCD clearly shows real-time readings alongside a 4-tier air quality indicator (Good / Slight / Unhealthy / Hazardous) based on WHO-recommended thresholds. The smart audible buzzer (with mute option) alerts you when HCHO exceeds 0.08 mg/m³ or TVOC passes 0.262 mg/m³, so you know exactly when to open windows or step out for fresh air
• 【All-Day Battery Life & Flexible Auto-Off】Powered by a high-capacity 2000mAh lithium battery, this device runs up to 15 hours continuously with the backlight on, or 24 hours with backlight off—ideal for overnight monitoring. The auto-shutdown feature (default: 30-min screen-off, 2-hr full power-off) can be easily disabled via the menu for non-stop tracking. USB-C charging and a low-battery indicator keep you informed at all times
• 【Smart Data Logging & Effortless Operation】Automatically records 96 data sets (one every 15 minutes) covering a full 24-hour cycle, with circular storage for long-term trend tracking. One-touch buttons let you recall max values, switch between °C/°F, and toggle backlight. Simply long-press (1s) to power on/off. Note: a 200-second warm-up in clean air is required for sensor calibration—perfect for quick, hassle-free daily use
• 【Complete Kit & Reliable Support】Comes ready to use out of the box: monitor ×1, USB-C charging cable ×1, screwdriver ×1, and detailed manual ×1. (Note: storage bag not included.) Compact and lightweight (5.04 × 3.5 × 1.46 in, 0.5 lb), it fits anywhere. Backed by a 2-year quality warranty and responsive lifetime tech support—buy with confidence for your family’s health