Product Overview: The BR-SMART-128s is designed for real-time monitoring of air quality in both indoor and outdoor environments. It specifically measures the following parameters: PM 2.5 and PM10: Measurement Method: Light scattering Measuring Range: 0 to 999 g/m Resolution: 1 g/m Accuracy: 10% Formaldehyde (HCHO): Measurement Method: Electrochemical sensor Measuring Range: 0 to 3.000 mg/m Resolution: 0.001 mg/m Accuracy: 10% Volatile Organic Compounds (VOCs): Measurement Method: Semiconductor sensor Measuring Range: 0 to 9.999 g/m Resolution: 0.001 mg/m Accuracy: 10% Display and Interface: Display Mode: 2.4" TFT color screen Data Storage: Stores up to 10,000 records Data Recording Interval: Adjustable between Continuous Mode, 10 mins, 15 mins, and 20 mins intervals Battery: Built-in rechargeable battery (2200mAh) Power Adapter: Input AC220V, 50/60Hz, 0.45A; Output DC5V, 500mA Environment for Use: Temperature Range: 0 to 50 Humidity Range: 0 to 90% RH Pressure: 1 standard pressure Product Packing List: Air quality monitoring unit 128MB Micro SD Card Power adapter (EU plug) Data/Charging cable User Guide Applications: This device is suitable for monitoring air quality in various settings such as homes, offices, vehicles, and outdoor shelters. It provides visual data on PM 2.5, PM10, formaldehyde, and VOCs concentrations, aiming to assist in maintaining healthier indoor and outdoor environments. If you have any specific questions or need further details about its functionality or usage, feel free to ask!