Today I will be discussing the Extech CT70 AC Circuit Load and Outlet Tester. This circuit load tester may be small, but it packs a big punch. The first thing you notice about this load and outlet tester is the digital display. This innovation is oddly late to the party but makes life so much easier. When using the CT70 as an outlet tester the display will shine Blue for Pass and Red if there is a problem. The outlet functions that it handles are as follows,