Your home s personal meteorologist is now right at your fingertips! Check your backyard temperature and humidity while getting ready for work with La Crosse Technology s wireless color weather station. Be informed of extreme changes in the climate with its programmable temperature alerts and recorded history with time and date stamp. Audio and visual warning icons detects when the preset value is reached. Display current heat index and dew point. Features full calendar view and multi-color dynamic display and trends. Requires (included) AC adapter cord and can add 2 AA alkaline batteries for back up due to power loss. Included weather resistant wireless temperature and humidity sensor transmits over a 300 ft. range. Versatile display can stand on table or hang on a wall and display with 12/24 hour view. Also features auto-dimming option to adjust the backlight settings to your desired level. Indicators will display when batteries are weak and should need to be changed.