Air Quality Monitor Indoor Home CO2 Meter Carbon Dioxide Detector Temperature Humidity Sensor Real Time Reading CO2 Alarm Rechargeable Battery Overview: This product is an air quality monitor that detects Carbon dioxide (CO2), Temperature, and Humidity. It combines sensors real-time monitoring of Carbon dioxide (CO2), temperature, and humidity on its display. Features: Built-in advanced Infrared (NDIR) sensor can accurately detect CO2, temperature, and humidity. 2000mAh rechargeable battery can provide more than 10 hours of standby time when fully charged. One key to quickly turn on/off the alarm function. An alarm will be issued when the CO2 reading exceeds 1000ppm. Professional sensors require a sampling time of only 1.5s. 2.8-inch large size display shows the readings clearly. Portable size, and can detect the gas quality in the bedroom, living room, kitchen, office, car, school, hotel, campground, etc. Specifications: Display Method: Common screen display Atmospheric Pressure: 86Kpa - 106Kpa Detection Method for CO2: Infrared (NDIR) Concentration Unit for CO2: PPM CO2 Measurement Range: 400-5000PPM Resolution: 1PPM Temperature Measurement Range: -10-50°C Temperature Measurement Accuracy: ±1°C Humidity Measurement Range: 20%-85%RH Humidity Measurement Accuracy: ±4%RH Sampling Time: 1.5 seconds Power Source: 2000mAh Lithium battery 5V DC Power Charging via Micro USB Port Detection Temperature: -10°C to 50°C Relative Humidity: 20% - 85% Storage Temperature: -10°C to 60°C Product Size: 90x90x50mm Product Weight: 200g Package Size: 1 * Carbon Dioxide Detector 1 * Charging Cable 1 * User Manual