Description: Multiple detection makes this detector very stable and reliable. The digital LCD display allows you to see more obviously and conveniently. Infrared detection technology is used to make the measurement more accurate. Refresh in real time to get a more stable measurement value. Made of ABS material, it is very durable to use. The length of this product is 9cm, the width is 7cm and the height is 3.5cm. It is suitable for home, office, hotel, greenhouse, mall and so on. Item Name: Carbon Dioxide Detector Material: ABS Working Voltage: 5V Product Color: White, Black Charging Interface: Type-C 5V Sensor: Semiconductor Sensor Detection Range: 400-5000ppm Battery Capacity: 1200mAh (with Power Indicator) Temperature: 1 Degree Celsius - 70 Degree Celsius Features: Multiple Detection, LCD Display, High Precision Display Mode: LED Digital Display + LCD Screen + Backlight Co2 Instructions: 0-799ppm: Green Flashing 800-1199ppm: Yellow Flashing 1200-1599pm: Orange Flashing 1600-1999 Ppm: Red Flashing Four Colors Flashed above 1999ppm Size Details: Size: 9cm x 7cm x 3.5cm/3.54" x 2.76" x 1.38" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Carbon Dioxide Detector 1 x USB Charging Cable 1 x English User Manual