Every package is securely wrapped with bubbles, peanuts, foams, paper, cardboard to insure the safe arrival of your new product. We understand the certainty of receiving a product the way you purchased it, that is why we have a strong, experienced packaging team to work with your every need. All parcels are shipped within 24 hours from the moment we receive the payment. We deliver worldwide. Principle of operation: A voltage tester tells you whether there is electrical voltage in the checked element. In the middle of the meter, inside the transparent housing, there is a neon lamp. When the neon lamp lights up, one end of the sampler should be placed on the joint in preparation, and the test tube should be placed against the fuse to the end. If the tested local element is live (connection).