Description: The CO2 Detector will help you monitor air quality, making it an excellent helper for the home, office, school, gym, hotel, warehouse, etc. Features: 1. Large LED display screen for easy reading. 2. Available for desktop or wall mount. 3. NDIR sensor for quick and accurate detection of CO2 concentration/humidity/temperature. 4. Helpful for kids, babies, the elder, and the pregnant to know the air quality. Specification: Product Name: Large Wall Mounted Carbon Dioxide Detector Material: ABS Size: about 27*9*3.5cm/10.6*3.5* 1.6inch Display Methods: LCD screen Sensor: sensor Detection Temperature: -10 to 50 Relative Humidity: 20%-85% Storage Temperature: -10 to 60 CO2 Concentration Unit: PPM Product Weight: about 276g Instruction for buttons: 1. On/Off button, pre or click on/off. 2. Click the up / down button to adjust. 3. Settings button, pre or click to enter settings. 5. DC adapter input port. 6. LED Display: Adjust the brightne of the LED after the device is turned on, then the device will automatically enter the interface that displays the CO2 current value, temperature and humidity. Packing List: 1* CO2 Detector 1* Charging Cable 1* Manual Notes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size.