PCE-PCO 2 is a portable handheld dust particle measuring device or particle counter used to monitor particulate matter (PM) concentrations in the air. Designed to aid in indoor air quality (IAQ) assessments, this particle counter also measures air temperature, dew point and relative humidity.

• PM channels:PM 2.5, PM 10, including mass concentration mode (µg/m³)
• Particle sizes (in micrometers): 0.3 µm, 0.5 µm, 1.0 µm, 2.5 µm, 5.0 µm, 10 µm
• Temp. measuring range: 0 … +50 °C / +32 … +122 °F
• Humidity measuring range: 0 … 100 % RH
• Built-in camera for image and video recording
• Free software download on PCE Software web page

PCE-PCO 1 is a handheld laser optical particle counter, or dust particle measuring device, for measuring the concentration of particles in the air. The dust particle measuring device:

• Measures 6 sizes of particles: 0.3 µm, 0.5 µm, 1.0 µm, 2.5 µm, 5.0 µm, 10 µm
• Offers a robust 80 MB internal memory and microSD card slot
• Features a large, full-color LCD display with backlight
• Includes a built-in camera for image and video recording
• Contains sensors for measuring air temperature, dew point and relative  humidity
• Displays temperature in degrees Celsius (°C) or Fahrenheit (°F)