Can also be used without the radio function -Evaluation of communication either via radio or by means of a logger at the PC -Usable range of the radio connection: max. 350 m in the open air, and max. 75 m indoors -Data transmission of up to 200 loggers simultaneously onto the screen -All data is automatically stored on the PC in an Excel file -Alternatively, stored data can be transmitted conventionally directly at the PC via a logger interface or IrDA (infra-red) -All loggers have a 3-digit LCD display for the currently measured values -Up to 16,000 measured values can be stored in the logger -Sampling rate: between every 10 seconds and every 2 hours (variable) -Storage capacity between 40 days and 3 years -Internal temperature and moisture sensor -Variable hi/low limit alarm (with visual warning) -Min/max value indication according to hours or days -Each logger has its own ID number -Radio module with acoustic and LED alarm and hi/low alarm contact 30V/2A -The external sensor can also be connected directly to the radio module -Replaceable battery (battery life approx. 2 years)