La Crosse Technology WS-2317 Professional Weather Station "Displays extensive weather data, in all cases with programmable alarm functions for certain weather conditions as well as records of all minimum and maximum values along with time and date of their recordings Monitors all types of weather conditions, including indoor temperature/humidity, remote temperature/humidity, rainfall, wind speed and direction, wind chill, dew point, and barometric pressure Receives and displays the WWVB radio controlled time and date Optional PC interface included Three remote sensors are wired together and use two AA batteries total, with wireless transmission back to display unit