Don't guess with electricity.
Whether you are moving into a new place or looking to replace a few outlets in your current home, you'll want to know that everything is good before you plug something into the outlets. This outlet tester is down to $4.93 and has a GFCI test button, a bright LED display that's easy to read, and much more. All you have to do is plug this test device into your outlet, press the button, and look at the lights.
Each lighting configuration tells you something about what's going on from "Correct" to "Open Hot" and even "Live Neutral Reverse." Be sure to use the coupon code QBK2WKE9 to score one of these at a great discounted price.