The Klein Tools RT250 GFCI Outlet Tester is a reliable and durable voltage tester designed for electrical work. Made of polycarbonate material in a vibrant yellow color, this 4.5-inch long unit is both portable and waterproof. It features an LED indicator, a flashlight, and a clip for convenient use. With a manufacturer warranty of 2 years and a limited warranty for new items, this unit offers peace of mind for professionals and DIY enthusiasts alike. Crafted by the trusted brand Klein Tools in the United States, this GFCI Outlet Tester is a must-have tool for electrical testing and inspection.