AD-5571 How to use non-contact voltage tester correctly

A non-contact voltage tester is an electrical measuring instrument that helps to protect the lives of workers involved in electrical work. However, using it incorrectly can pose a risk of electric shock and is very dangerous. To prevent electric shock accidents, it is necessary to perform a functionality check before use. Please use a known… Continue reading AD-5571 How to use non-contact voltage tester correctly