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3 Ways to Build Your Own Contactless Voltage Detector For Less Than a Dollar

When electricity is not properly handled, it results in electrical shocks with a nasty experience; which is why safety must come first when working with electricity or electrical devices. In order to avoid injury, prior to starting work on an electrical box such as an AC mains switch-board or a power supply, you must first verify there is no AC voltage. It is really hard to completely isolate a device from the main supply; so, how can you be sure that there’s no voltage remaining?”

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