Product model: 24 VAC Circuit Short Finder Excellent Quality: This tool is made of high-quality materials and has the advantages of wear resistance and high temperature resistance. It has undergone strict testing and has a long service life Function: The alligator clip enables quick identification of short circuits in 24V circuits - when the light is on, there is a short circuit. When it goes out, the short-circuit problem is solved Compatible With: specifically designed for testing HVAC and building automation wiring, can quickly solve problems at the work site or in the maintenance phone, providing accurate readings and reliable performance for all your electrical testing needs Easy to carry: Compact and portable, its compact design makes it convenient to carry to different work locations