Lascar el gfx 1 temperature data logger with graphic lcd display lascar el gfx 1 cal t the lascar el gfx 1 standalone usb data logger measures and stores over 250 000 temperature readings over a 30degc to 80degc 22degf to 176degf range and at a resolution of 01degc using the windows control software available as a free download from wwweasylogusbcom users can quickly set up the data logger and view downloaded data by connecting the device to the pcs usb port using the