Uni-T A25D PM2.5 Monitors The A25 Series PM2.5 is a compact air quality monitor designed for everyday use in a variety of settings—from homes to offices and commercial spaces. The device focuses on measuring PM2.5 concentrations, allowing you to quickly assess air quality and take action when it deteriorates. Built-in features, such as audible and visual alarms and automatic baseline calibration, make the meter easy to use and require no specialized knowledge. Additional features, such as a backlit screen and automatic shut-off, enhance user convenience and save energy. Included A25 Air Quality Monitor Micro USB cable User manual Manufacturer Uni-T Measurement PM2.5 Range 0–500 µg/m³ PM2.5 measurement accuracy 0~100 ±(10 µg/m³ + 10 dgts); 101–400 ±(10% + 30 dgts); 401–500 ±(10% + 50 dgts) Formaldehyde (HCHO) range 0–2 mg/m³ Temperature (°C) 0–2 mg/m³ for reference purposes only ±1°C Temperature (°F) 0~2 mg/m³ for reference purposes only ±1.8°F Humidity ±5%RH@30%~80%RH; ±8%RH@80%RH Automatic baseline calibration yes Audible and visual alarm yes Low battery indicator Yes Auto power off Yes Screen backlight Yes Power supply 1500 mAh polymer battery Display 42 × 65 mm Color White-gray Weight 230 g Product dimensions 75 × 55 × 130 mm
