Portable CO2 Detector, Indoor Air Quality Monitor with NDIR Sensor and LCD Screen, Alarm for Home and Office -

【Large LCD Screen】This portable CO2 detector features a large, easy-to-read, and visually appealing color LCD screen. If not used for 5 minutes, it automatically switches to ECO mode to save energy, minimizing its environmental impact. 【Portable and Durable】This CO2 monitor is small enough to take anywhere and can be hung using the included lanyard. It comes with a built-in 1000mAh lithium battery that fully charges in 3 hours and lasts for approximately 72 hours. 【Dual Alarm Function】This CO2 detector has two CO2 indicator lights on its screen: a green light for good concentration (400~699 ppm), a yellow light for medium concentration (700~1499 ppm), and a red light for dangerous concentration (1499~5000 ppm). When the detected CO2 concentration exceeds 1500 ppm, the device will sound an alarm to remind you. The CO2 alarm value is customizable. 【Wide Application】This CO2 monitor is suitable for home, office, grow tent, greenhouse, production warehouse, and more. NOTE: We recommend, when using the detector for the first time, placing the device in an open, unpopulated environment and manually calibrating it once to avoid inaccurate readings. 【High-Precision Sensor】This CO2 detector adopts an advanced NDIR sensor, which detects carbon dioxide using infrared detection technology with high accuracy, strong anti-interference, and excellent stability.

1. High-Precision Sensor 2. Large LCD Screen 3. Compact and Portable

How do I calibrate my CO2 detector?