The wireless weather station features 12/24hr display, date and weekday display, indoor/outdoor hygrometer and adjustable projector to display the time on any wall or ceiling. Powered by AC/DC – DC power adapter included. automatic snooze function, temperature display in °C/° F, indoor/outdoor thermometer, Temperature ranges between -20°C (-4°F) and 50°C (122°F). Includes 2AAA batteries for sensor. 1.875" D x 4.25" W x 6.125" H