Your own personal weather forecast! The Celestron Compact Weather Station is a wireless, easy to set up, free-standing unit with a detachable stand or wall hanger for easy install. Built-in barometer shows current weather and atmospheric pressure. Monitors indoor/outdoor temperature and indoor humidity with audible high/low temperature and humidity alerts. The wireless outdoor sensor transmits data to the receiver where the information is displayed on the LCD screen. Features easy to read digital time display, alarm clock with snooze, calendar (displays days, month and day of week), moon phase and current tide conditions in your area.