This Intermatic E1020 wall timer switch is a heavy-duty device suitable for any room in your home, shop or garage. With a current rating of 15A and voltage of 125V, it features a rotary knob control style. The timer is designed to be mounted on walls and has a rectangular box shape measuring 4 3/8 inches in height and 3 1/4 inches in width.In addition to its suitable mounting style and current type of AC, this timer also boasts several features, including heavy-duty construction and mechanical timing levers. It is perfect for areas where you might need a timed exhaust fan or lights as well as other similar applications. This timer is perfect for light security or other timed applications. Upgrade your home or shop with this reliable and functional timer wall switch.