Features: – Universal Indoor Air Quality (IAQ) Meter – Measures Carbon Dioxide, Temperature, Humidity – Ensure Household Safety with Carbon Dioxide Gas Monitoring – Accurate & Reliable Data Readout – Laboratory Tested for Safety Level Pollution Detection – Target Meter Setting: Audible & Visual Alarm Notifications – Built-in Memory: Saves Thousands of Daily Data Records – Easy-to-Read Digital LCD Display Interface – Simple, Hassle-Free Operation – Sleek & Stylish Modern Design – Compact & Portable Desktop Style – Removable Stand for Wall Mount Ability – Built-in Rechargeable Battery (or Powered via USB Cable) – Also Features Standard Digital Clock/Calendar Functions: Time & Date Display – Button-Activated ‘Record’ Function Saves Real-Time Meter Readings – Includes Computer Software for Data Analysis Review (Windows PC Only) – Used for Home, Office, School, Business, Warehouse Applications – *For Indoor Use What’s in the Box: – Digital Air Quality Meter – USB Cable – Wall Power Adapter Technical Specs: – Selectable Temperature Unit Display: Fahrenheit / Celsius – Built-in Memory: Saves Up to 12,700 Data Readings – Gas Measurement Technology: Non-Dispersive Infrared Detector (NDIR) – Particle Measurement Technology: 2.5/Micrometers Particle Matter – co2 Measurement Range: 0~9999 PPM – co2 Accuracy: +/-70 PPM (+/-3% of Reading 0~5000 PPM) – co2 Measurement Resolution: 1 PPM – Temperature Measurement Range: (-10~70° Celsius) – Temperature Resolution: (0.1° Celsius) – Temperature Readout Accuracy: (+/- 0.3° Celsius) – Humidity Measurement Range: 0% ~ 99.9% (Relative Humidity) – Humidity Resolution: 0.1% – Humidity Readout Accuracy: ± 3% (10~90%) – Operating Conditions: (0~50° Celsius)~85% RH – Construction Material: Engineered ABS – Built-in Rechargeable Battery: 3.7V Li-iOn, 2000mAh – Power Supply: 110/220V AC to DC 5V USB Wall Adapter – Dimensions (L x W x H): 4.2’’ x 4.2’’ x 2.3’’ – inches