<p>[5 in 1 Function]: The multi-function air quality monitor takes care of and can be widely used in home, office, classroom, hotel, gym, greenhouse, warehouse, etc.</p> <p>[LCD Color Screen]: Displays CO2, CO2 index, HCHO (formaldehyde), TVOC, temperature, humidity and battery level. LCD color digital display for easy and clear reading even in dark environment.</p> <p>[Carbon Dioxide Tester]: Adopt semiconductor sensor, air convection detection, quickly and accurately detect CO2 concentration in living environment.</p> <p>[4-color indicator and alarm buzzer]: 0-799PPM (Green), 800-1199PPM (Yellow), 1200-1599PPM (Orange), 1600PPM and more (Red). The buzzer alarm when the CO2 concentration is higher than 1500PPM.</p> <p>[Rechargeable Design]: Built-in 1200mAh rechargeable lithium battery for strong endurance. With USB Type-C interface for fast charging via power adapter, power bank, laptop, etc.</p> <p>Screen: LCD Digital Color Screen</p> <p>Voltage: 5V DC</p> <p>Detection Principle: Semiconductor Sensor</p> <p>CO2 Detection Range: 400-5000PPM</p> <p>CO2 Detection Sensitivity: 1PPM</p> <p>HCHO Detection Range: 0-0.6mg\/m3</p> <p>TVOC Detection Range: 0-2.0mg\/m3</p> <p>Temperature Measurement Range: 0-50\u2103</p> <p>Temperature Measurement Accuracy: \u00B11\u2103</p> <p>Humidity Measurement Range: 0~99% RH</p> <p>Humidity Measurement Accuracy: \u00B12% RH</p> <p>Charging Port: Type-C, 500mA</p> <p>Built-in Battery: 3.7V 1200mAh Lithium Battery</p> <p>size:90x70x35mm</p> <p>Material:ABS</p> <p>colour:Black</p> <p>Package Contents:</p> <p>1 * Air Quality Analyzer</p> <p>1 * USB Cable</p> <p>1 * English manual</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>