This T&E Tools Cordless Circuit Tester is a reliable and efficient tool for testing electrical components and relays in vehicles. With a voltage range of 3-28 volts, it is suitable for a wide range of car and truck models. The tester is designed with convenience in mind, featuring a compact and easy-to-use interface that allows for quick and accurate readings. Made in the United States, this diagnostic tool is a must-have for any automotive enthusiast or professional mechanic.