Lascar el gfx 2 temperature and humidity data logger with graphic lcd display lascar el gfx 2 the lascar el gfx 2 standalone usb data logger measures and stores over 250 000 temperature and humidity readings over a 30degc to 80degc 22degf to 176degf and 0 to 100rh range at a resolution of 01degc and 01rh 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