Lascar el usb 2 high accuracy humidity temperature and dew point usb logger lascar el usb 2 cal th this standalone data logger measures and stores up to 16 382 relative humidity and 16 382 temperature readings over 0 to 100 rh and 35degc to 80degc 31degf to 176degf measurement ranges the user can easily set up the logger and view downloaded data by plugging the data logger into a pcs usb port and running the purpose designed software under windows 2000 xp and vista 32 b