The (Brand New) Milwaukee GFCI Receptacle Tester and Voltage Detector 2226-20 is a reliable circuit tester perfect for electrical testing in the home or workshop. This portable unit, featuring a clip for easy carrying, is designed by Milwaukee and comes with a 1-year manufacturer warranty. The red-colored unit measures 6 inches in length and is made of durable plastic. It utilizes electric measuring technology to accurately detect voltage and is a must-have tool for electrical testing and troubleshooting.