Temperature/Humidity Data Loggers, -35°C to 80°C (-31°F to 176°F)Monitors both ambient temperature and relative humidity Alarm display if user defined max min values are exceeded Displays all status information through two LEDs Simply plug the logger into the USB port of your computer to begin downloading no cables or wires are required Includes wall mount bracket and Windows compatible software Stores up to 16,000 temperature and 16,000 humidity readings User selectable measurement rate from 2 seconds to 24 hours