The RT210 Outlet Tester by Klein Tools is a convenient hand-powered device designed for testing GFCI outlets in North American electrical systems. It includes a special features chart for easy reference, measures 5.3 x 3.8 x 1.5 inches, and is Cat II 300v rated. The tester is compact and lightweight, weighing only 0.09 pounds, making it ideal for on-the-go electrical testing. With a stylish black and orange design, this Klein Tools product is a reliable tool for ensuring the proper functioning of electrical outlets in your home or workshop.