The TORK DG180A 24-Hour/7-Day Multipurpose Digital Timer is designed for 20 amp / 120-277 volt loads and has a plastic enclosure for indoor/outdoor use. Automate your home or office to save energy and money, using the intuitive programming interface to set different on/off times each day or to cycle loads on various days. Designed for commercial applications in the home, office, factory, church or school, including indoor/outdoor lighting, heaters, air conditioners, water heaters, warning signs or traffic lights