https://backup.lascarelectronics.com/data-loggers/carbon-monoxide/el-usb-co300/
EL-USB-CO300 | Carbon Monoxide USB Data Logger | Lascar
The EasyLog EL-USB-CO300 USB Carbon Monoxide Data Logger by Lascar Electronics measures and stores up to 32510 Carbon Monoxide readings over a 0 to 300ppm...
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