The Klein Tools RT250 GFCI Outlet Tester is a reliable electric voltage tester designed for easy and accurate testing of electrical outlets. With a durable polycarbonate construction in a vibrant yellow color, this unit features an LCD display, LED indicator, and a built-in flashlight for added convenience. The compact size and waterproof design make it a portable and versatile tool for measuring electric voltage, perfect for home and workshop use. Backed by a 2-year manufacturer warranty, this voltage tester from Klein Tools is a must-have for ensuring electrical safety in your space.