Electronic Continuity Tester

MX Electronic Continuity Tester without Battery and LED Indicator - Ideal  for Testing Cables, Cords, and Wires - MX MDR ElectronicsAn Electronic Continuity Tester is a device used to verify if an electrical circuit is complete and unbroken. It's a simple tool that checks for the presence of a continuous path for electrical current to flow between two points. This is done by applying a small voltage or current and detecting if it passes through, often indicated by an LED light or audible beep.