Particulate matter (PM) channels: PM 2.5, PM 10 – Particle sizes (in micrometers): 2.5 µm, 10 µm – Temperature measuring range: 0 … +50 °C / +32 … +122 °F – Humidity measuring range: 0 … 100 % RH – 2″ full-color LCD with user-friendly graphics – 220 x 176 pixel display resolution – Displays temperature in degrees Celsius (°C) or Fahrenheit (°F) – Powered by rechargeable battery or AC power (via USB port) – Portable handheld design for indoor air quality (IAQ) monitoring in the field and on the go – Includes a stand for attaching to the thread on the back of the device – Features an internal memory for storing up to 5000 data sets – Saved data is stamped with the time and date – Takes measurements even while the battery is charging – Integrated data logger with adjustable sampling time: 30 seconds, 1 minute, 2 minutes or 5 minutes – Programmable alarm and automatic power-off battery-saving functionality