detector and offer each value's environment result. Easy to read numbers surrounded by LCD screen digital display with air light indication will let you know if your air is unsafe, and you need to take some action. Features - Material: Glass and ABS. - Using high grade electrochemical detection module, good precision, stable performance. - shows , , CO2, temperature and humidity. - air monitor anywhere or leave device on for continuous monitoring. - This easy-to-carry air tester can help monitor air , in the car, and in hotel rooms. - Information is displayed on a clear LCD display. and practical design with a beautiful appearance. Specification - Charging : 700mA. - Working : 150mA. - Standby : 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