The EL-USB-CO from Lascar Electronics Inc.
, Erie, PA, monitors and records CO levels in a given environment over a period of time. The device stores over 32,000 readings and records CO levels from 0–1000 ppm. To set up the logger, you plug the device into the USB port of a PC, assign the logger a name, choose a sample rate, and determine a high-alarm level. You can download graphed data to the PC using supplied software.