Enhance air quality monitoring with our Indoor Air Quality Detector. Featuring a high precision PM10 sensor, sound and light alarm function, and 4-6 hours of continuous use on a 2-3 hour charge. Better understand your indoor environment effortlessly. Specification. Product Model: Air Quality Detector Operating temperature: 0-70 Display mode: TFT full color screen Working voltage: 5V Sensor:PM2.5 sensor/semiconductor sensor/electrochemical sensor Product Size:70*90*35mm/2.76x3.54x1.38 inches Net weight:165g Battery:1200mAh Voltage:3.7V Charge 2-3 hours, available 4-6 hours Detection range PM2.5 : 0-999ug/m PM10: 0-999ug/m Formaldehyde: 0-9.999mg/m Organic Pollutants: 0-9.999mg/m Carbon Monoxide: 0-1000PPM Carbon dioxide: 0-5000PPM Temperature: 0-70 Humidity: 0-99%RH Air: 0-500 Operating Instructions (1) Long press to turn on/off (2) Click 1 time to turn on/off the buzzer (3) Click 2 times to change the temperature unit /C (4) Click 3 times to enter the menubar; after entering the menubar: click 1 time to select the next item, click 2 times to confirm, click 3 times to exit. (5) After entering the curve interface: click 2 times to enter the main interface, click 3 times to enter the menus interface. (6) After entering the calibration interface: calibrate the sensor parameters and exit automatically after 5 seconds. (If the parameter is abnormal, you can calibrate the sensor by this method.) Pack list. Air Quality Detector*1 Instruction manual*1 Charging Cable*1