This is a brand new, factory sealed Oregon Scientific WMR-968, Complete Wireless Weather Station.
4 external sensors measure wind speed and direction, rainfall, indoor temperature, humidity, barometric pressure, and outdoor temperature and humidity
External sensors transmit up to 300' to main unit where information is displayed on large touch-screen LCD
Main unit accepts up to 3 additional sensors (sold separately)
Wall-mount or desktop display options
Solar powered remote sensors use 2 AA batteries for backup (not included)
Includes AC adapter and 4 AA batteries for base unit, and 4 AAA batteries for indoor sensor