GFI outlets are usually placed by sinks, bathtubs, hot tubs, spas, Jacuzzis or water sources in homes that need an electrical outlet within six feet of the source. If the GFI is tripped, you can lose power to a whole room or part of the house. You can reset the GFI to restore power. The GFI outlet has a test button and a reset button. If the outlet is working correctly, you can press the test button and the outlet will be shut down until you press the reset button. The test button should be tested monthly to insure it is working correctly. The outlet should be tested monthly to ensure proper operation.