Amanda Hu on X: "Made these rebreathed % and calibration instruction decals for the Vitalight/DonateMask CO2 monitor. I will be posting the printable file for this and the Aranet4 version soon so
![Amazon.com: Mini CO2 Detector,Upgraded Air Quality Monitor, Stylish and Lightweight CO2 Monitor for Travel Home Indoor,You Can Use Anywhere : Industrial & Scientific Amazon.com: Mini CO2 Detector,Upgraded Air Quality Monitor, Stylish and Lightweight CO2 Monitor for Travel Home Indoor,You Can Use Anywhere : Industrial & Scientific](https://m.media-amazon.com/images/I/51fb8qXLa2L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Mini CO2 Detector,Upgraded Air Quality Monitor, Stylish and Lightweight CO2 Monitor for Travel Home Indoor,You Can Use Anywhere : Industrial & Scientific
![VitaLight™ UVC LED Universal Phone Sanitizer Box - Kills More Than 99.9% of Surface Virus and Bacteria – CLEANLIFE VitaLight™ UVC LED Universal Phone Sanitizer Box - Kills More Than 99.9% of Surface Virus and Bacteria – CLEANLIFE](https://cleanlife.com/cdn/shop/products/VitaLight-Box_6-Plugged-In_10-30-20_SQ_grande.jpg?v=1609343141)
VitaLight™ UVC LED Universal Phone Sanitizer Box - Kills More Than 99.9% of Surface Virus and Bacteria – CLEANLIFE
![T. Ryan Gregory on Twitter: "A few comparisons. Both calibrated manually outdoors beforehand. At high values the Vitalight may come in lower, but probably sufficiently reliable to inform one's decisions. https://t.co/UCZoJYN2uI" / T. Ryan Gregory on Twitter: "A few comparisons. Both calibrated manually outdoors beforehand. At high values the Vitalight may come in lower, but probably sufficiently reliable to inform one's decisions. https://t.co/UCZoJYN2uI" /](https://pbs.twimg.com/media/FXLRSouXkAUPvMp.jpg:large)
T. Ryan Gregory on Twitter: "A few comparisons. Both calibrated manually outdoors beforehand. At high values the Vitalight may come in lower, but probably sufficiently reliable to inform one's decisions. https://t.co/UCZoJYN2uI" /
![Amazon.com: Customer reviews: Vitalight Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor You Can Use Anywhere. Amazon.com: Customer reviews: Vitalight Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor You Can Use Anywhere.](https://m.media-amazon.com/images/I/61T7P+uEetL._UC256,256_CACC,256,256_.jpg)
Amazon.com: Customer reviews: Vitalight Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor You Can Use Anywhere.
![Amazon.com: Customer reviews: Vitalight Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor You Can Use Anywhere. Amazon.com: Customer reviews: Vitalight Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor You Can Use Anywhere.](https://m.media-amazon.com/images/I/71m3N3KxFrL._UC256,256_CACC,256,256_.jpg)
Amazon.com: Customer reviews: Vitalight Mini CO2 Detector, Air Quality Monitor, Stylish and Lightweight CO2 Monitor You Can Use Anywhere.
![Amazon.com: CO2 Detector, 3-in-1 Air Quality Monitor, Temperature and Humidity Detection Fuction, Carbon Dioxide Detector for Home Environment and Workplace : Industrial & Scientific Amazon.com: CO2 Detector, 3-in-1 Air Quality Monitor, Temperature and Humidity Detection Fuction, Carbon Dioxide Detector for Home Environment and Workplace : Industrial & Scientific](https://m.media-amazon.com/images/I/71tITRMLAjL._AC_UF894,1000_QL80_.jpg)