This air quality detector is made of , which can withstand the use. Features the glass and ABS material, which has high durability, not easy to deform. Fine workmanship, it the practicality. Features - Material: Glass and ABS. - made with stable performance and . - It is suitable for office, family, gym and other occasions, with a wide ranges of applications. - Intelligent color screen display, the number is clear, easy to identify and read. - It can be charged with USB cable, convenient and practical. Small and portable, easy to carry. - The excellent workmanship of our product will bring you a . Specification - Charging current: 700mA. - Working current: 150mA. - Standby current: 10uA. - Low voltage protection: 3.35V. - LCD voltage: 3.3V. - CO2 range: 400-5000PPM. - range: 0-2000mg/ . - range: 0-2000mg/ . - Humidity range: 0-100%. - Temperature range: 0-100 degree centigrade. - CO2 alarm value: >2000 PPM alarm 5 times. - Screen size: 2.8 inch. - Reaction: <150s. - Test temperature range: 0-70 degree centigrade. - Humidity test range: 0- RH. - Working voltage: 5V/1A adapter charging. - Battery capacity: 1200mAh. - Charging time: 2h. Package list: 1 x CO2 Detector 1 x Data Cable 1 x Manual