This Pre-programmed Weather Station features data logger that stores your measurements in a fail-safe, non-volatile memory at user-defined intervals - until you transfer the data to your PC. Just plug in sensor suite, set your measurement intervals and start logging data. It measure air temperature, relative humidity, vapor pressure, barometric pressure, wind speed, gust and direction, solar radiation, precipitation, lightning strike counter and distance. Memory to store > 40,000 readings. More than 6-month battery power source (5 AA batteries). Complete with ATMOS 41 Sensor suite, PC Interface cable for downloading data to any Laptop/PC and an Indigenous tripod stand.