CO2 Detector, 10-Years Battery Life Indoor Air Quality CO2 Monitor Carbon Dioxide Monitor NDIR Sensor 400-5000 PPM, 1600 mAh USB Rechargeable CO2 Alarm Meter for Home, Office, Car, Gym

【High-precision Real-time Monitoring】–The CO2 sensor has a built-in high-performance chip, and the NDIR sensor has high precision, stable performance and strong anti-interference ability. (Tips: Please let the device work short mins outdoor before use for most accurate results)
【CO2 Visualization】: Colour display: 400~999ppm Green (Safety) 1000-2000ppm Yellow (Warning) 2001-5000ppm Red (Exceeding standard). The indicator light that changes color according to the different degree of carbon dioxide concentration allows you to easily grasp the current state of carbon dioxide concentration in the air
【Closeable Automatic Alarm Function】–Then the CO2 concentration exceeds 1000ppm, an alarm will sound to remind people to pay attention to ventilation. If the user does not like the alarm clock, he can quickly press the main function key twice to turn on/off the automatic alarm clock function
【8+ Hours+ Long Standby】–The built-in 1600 mAh battery can provide more than 10 hours of standby time when fully charged, in addition to real-time power through the included usb charging cable, this enables long-term monitoring of air quality level
【Portable CO2 Detector】–The CO2 concentration measuring instrument adopts compact design, Compact size, easy to carry, Dimensions are 70 x 80 x 35 mm, weight only 150 grams, measurement position can be easily changed.CO2 monitors are not only widely used in homes, but also in places where people tend to gather and poorly ventilated places. (For example: schools, hospitals, restaurants, shopping malls, etc)