Indoor air quality monitor desktop carbon dioxide gas co2 meter detector

$37.00 - $43.00 Shenzhen Xinxunxing Electronic Technology Co., Ltd. https://play.google.com/store/apps/details?spm=a2700.product_home_l3.home_header.43.2ce267afj7vdoC&id=com.alibaba.intl.android.apps.poseidon&referrer=pcmaindownload carbon dioxide 8.docx