The voltage pen was bought out of curiosity and to see how well it performed for the price range. When you get close to a live wire it has a 2 light indicator, when you touch a live wire housing area it shows a 4 light indicator, and when you touch a live wire directly it shows a 6 light indicator. The light turns off when you are about 4-5 inches away from the live wire. The tester also has a light at the tip end of it. I have been using to test a breaker box, ceiling fan, and light switch. The manual is well written and informative. Overall, this is a great voltage tester pen at incredibly cheap price ($9).
1. Turn off the power to the switch
2. Double outlet to make the right outlet is turned off