Weather in color, right at your fingertips. Vibrant LCD with light adjustable backlight for nighttime use with On-Demand option by battery power or continuous lighting using included AC adapter. Displays indoor and outdoor temperature and humidity with a 12 hour forecast based upon barometric pressure. Atomic time and date. Updates for Daylight Saving Time. Calendar displaying: month, day and date. Has a wireless transmission range (up to 300 ft), and outdoor temperature range (-40F - 140F), and customizable alerts for indoor/outdoor temperature and humidity. Includes weather resistant wireless transmitting outdoor sensor. Batteries Not Included.