plug an LED (Dollar Tree frequently has them) nightlight into the upper plug and the Dri-Rod (or whatever brand you choose) into the lower plug so you can tell at a quick glance whether or not the rod is receiving power.I had a faulty plug that has since been fixed that could have caused me big problems had I not had an LED nightlight plugged into it making me aware that there was a problem with the GFCI.Just a heads up for safe owners.