Ebro ebi 300 th usb temperature and humidity data logger standard version ebro 1340 6334 p the ebro ebi 300 th is a multi use data logger with external humidity and temperature probe data logger with usb connection this standard version data logger is a battery powered temperature measurement and recording instrument for relative humidity monitoring in storages and during transports p p the data logger is very easy to use just press start and the ebi 300 th is ready to monitor time an