This high accuracy USB data logger records over 250,000 temperature and relative humidity readings in one or more sessions for up to 1 year. It has user-programmable audible alarm thresholds with highly visible confidence/alarm LEDs. Inside the rugged IP67 / NEMA 4X case, buttons for start, stop and restart and a graphic LCD with on-screen menus provide real-time analysis of data as a summary or as a graph. The EL-WIN-USB software enables quick configuration and data download via the USB port. Supplied with two batteries, USB cover, mounting clip and micro USB cable.