Monitor and maintain a healthy indoor environment with this advanced 11-in-1 Air Quality Tester, designed to provide comprehensive and accurate air quality measurements. Equipped with multiple high-precision sensors, this device continuously tracks key air quality indicators including AQI, carbon monoxide (CO), carbon dioxide (CO₂), total volatile organic compounds (TVOC), formaldehyde (HCHO), particulate matter (PM1.0, PM2.5, PM10), temperature, humidity, and time. Stay informed and protect your living or working spaces with real-time data and intelligent alerts sent directly to your smartphone via the dedicated mobile app. Key Features: · Comprehensive Air Quality Monitoring: Simultaneously measures 11 critical parameters such as AQI, CO, CO₂, TVOC, HCHO, PM1.0, PM2.5, PM10, temperature, humidity, and time for an all-in-one solution to indoor air quality management. · High-Precision Multi-Sensor Technology: Utilizes NDIR infrared carbon dioxide sensors, laser particle sensors, semiconductor sensors, optical sensors, and electrochemical carbon monoxide sensors to ensure accurate and reliable readings across diverse environments. · Automatic Calibration & Adaptive Brightness: Features automatic calibration to maintain measurement accuracy over time. The TFT-LCD display adjusts brightness based on ambient light conditions and supports an energy-saving screen-off mode while continuing real-time air quality detection. · Convenient App Control & Real-Time Alerts: Built-in Wi-Fi enables seamless connection to a user-friendly mobile app, allowing remote monitoring, data access, and instant notifications if any air quality parameter exceeds preset safety thresholds. · Compact & Versatile Design: Crafted from durable ABS material with a space-saving form factor, this device supports wall mounting via included positioning stickers and accessories, making it ideal for homes, schools, hospitals, children’s rooms, hotels, restaurants, cars, and more. · Long-Lasting Battery & Easy Charging: Equipped with a built-in 3000mAh rechargeable battery and USB Type-C charging interface, ensuring extended use and convenient power management. Specifications: · Model: PV33B-CO / PV33-CO (Optional) · Material: ABS · Sensors: NDIR infrared CO₂ sensor, laser particulate sensor, semiconductor sensor, optical sensor, electrochemical CO sensor · Detection Technologies: Infrared, laser, semiconductor, electrochemical · Display: TFT-LCD · CO Detection Range: 0~1000 PPM; Accuracy: ±10 PPM or 5% · CO₂ Detection Range: 400~5000 PPM; Accuracy: ±(50 PPM + 5% reading) · PM1.0/2.5/10 Range: 0~1000 μg/m³; Accuracy: ±10 μg/m³ (0~100 μg/m³), ±10% (100~500 μg/m³) · HCHO Range: 0~1.999 mg/m³ · TVOC Range: 0~9.999 mg/m³ · Temperature Range: 0~50℃; Accuracy: ±1℃ · Humidity Range: 0~99% RH; Accuracy: ±5% RH · Input Voltage: 5V · Battery: Built-in 3000mAh rechargeable battery · Charging Interface: USB Type-C · Dimensions: 120 x 89 x 35 mm (4.72 x 3.50 x 1.37 in) · Weight: 209g (7.37 oz) Package Includes: · 1 x 11-in-1 Air Quality Tester This versatile air quality tester is an essential tool for anyone seeking to improve indoor air safety and comfort. Its multi-sensor design, precise detection capabilities, and smart connectivity features make it perfect for a variety of environments, ensuring you can breathe easier and live healthier every day.