The PCE-CMM 5 CO2 Analyzer and Indoor Air Quality Monitor is a desktop digital environmental instrument engineered by the European measurement leader, PCE Instruments (Germany). Designed specifically for continuous indoor environmental monitoring, the PCE-CMM 5 performs simultaneous analysis of three vital ambient parameters: Carbon Dioxide (CO2) concentration, ambient air temperature, and relative humidity.

KEY PRODUCT FEATURES AND OPERATIONAL ADVANTAGES:
1. High-Precision Maintenance-Free NDIR Infrared Sensor:
Equipped with an advanced Non-Dispersive Infrared (NDIR) absorption sensor, providing accurate CO2 detection across a 400 to 5,000 ppm measuring range with a 1 ppm resolution. NDIR technology guarantees long-term measurement stability, optical drift immunity, and zero sensor degradation compared to conventional electrochemical cells.
2. Self-Correcting ABC (Automatic Baseline Correction) Algorithm:
Integrates an automatic self-calibration ABC routine that periodically adjusts the baseline value during fresh air circulation cycles, maintaining absolute sensor precision year-round without manual calibration tools.
3. High-Contrast 4.3" Color Graphic LCD & 5-Hour Trend Graph:
Features an easy-to-read 4.3-inch graphic LCD displaying live numerical readouts of CO2, temperature, humidity, date, time, and battery charge status. Users can toggle instantly to the 5-hour historical trend graph view to track airborne CO2 fluctuations over time.
4. 3-Color Visual Traffic Light Alert System:
Includes an intuitive traffic light indicator that delivers immediate visual feedback regarding room ventilation conditions:
• Green (Good): 400 ... 800 ppm – Optimal air quality, supporting high concentration and productivity.
• Yellow (OK / Moderate): 800 ... 1,200 ppm – Acceptable air, recommended to introduce fresh air.
• Red (Poor / Bad): 1,200 ... 5,000 ppm – High CO2 buildup causing drowsiness and fatigue; immediate ventilation required.
5. Dual Battery & Continuous USB Mains Operation:
Powered by an internal high-capacity 3.7V 3,000 mAh Lithium-ion rechargeable battery delivering up to 6 hours of portable runtime, or operated continuously via a standard 5V/1A Micro-USB adapter.
6. Ergonomic Desktop Design:
Sleek, angled chassis designed for placement on office desks, lecture hall podiums, laboratory benches, or classroom shelves.

TYPICAL REAL-WORLD APPLICATIONS:
• Offices, Conference Rooms & Commercial Facilities: Monitoring CO2 levels to ensure occupant health, alertness, and cognitive performance.
• Schools, Kindergartens & Hospitals: Tracking classroom air quality and reducing indoor aerosol accumulation through timely ventilation.
• Agricultural Greenhouses & Mushroom Farms: Regulating ambient CO2 levels to optimize photosynthesis and crop yield.
• HVAC Engineering & Energy Audits: Verifying ventilation efficiency and demand-controlled fresh air distribution in smart buildings.

• Manufacturer: PCE Instruments
• Model: PCE-CMM 5
• Brand Origin: Germany
• Device Type: Desktop CO2, Temperature, and Humidity Indoor Air Quality Monitor
• CO2 (Carbon Dioxide) Measurement:
  - Measuring Range: 400 ... 5,000 ppm CO2
  - Sensor Technology: Non-Dispersive Infrared (NDIR) Sensor
  - Accuracy: ±75 ppm or ±5 % of reading (whichever is greater)
  - Resolution: 1 ppm
  - Baseline Adjustment: Automatic Baseline Correction (ABC Algorithm)
• Temperature Measurement:
  - Measuring Range: -10 ... +50 °C (14 ... 122 °F)
  - Resolution: 1 °C
  - Selectable Units: °C or °F
• Relative Humidity Measurement:
  - Measuring Range: 20 ... 95 % RH
  - Accuracy: ±4 % RH
  - Resolution: 1 % RH
• Sampling Rate: 1.5 seconds
• Display: 4.3" Graphic Color LC Display
• Historical Trend: 5-hour progression trend graph for CO2 concentration
• Traffic Light Indicator Thresholds:
  - Green (Good): 400 ... 800 ppm
  - Yellow (OK): 800 ... 1,200 ppm
  - Red (Poor): 1,200 ... 5,000 ppm
• Power Supply:
  - Rechargeable Battery: Integrated 3.7 V Li-Ion battery (3,000 mAh)
  - External Power: 5 V Micro-USB (1,000 mA)
• Battery Life: Approximately 6 hours of continuous operation
• Charging Time: Approximately 2 hours
• Operating Environmental Conditions: -10 °C ... +50 °C / 20 ... 85 % RH (non-condensing)
• Device Dimensions (L x W x H): 145 mm x 78 mm x 97.2 mm
• Net Weight: 210 g
• Standard Delivery Package: 1 x PCE-CMM 5 Air Quality Meter, 1 x Micro-USB Charging Cable, 1 x User Manual