[Product Information]

Short & Open Circuit Finder Tester Voltage: 12V; Power Supply:Two 9V batteries Required (Not Included In Package); And it comes with manual， easy to use
It will work on all kinds of circuits with voltages between 6 and 42 volt DC. (such as those found in automobiles，trucks，tractors，boats，RVs，etc...With its wide working voltage range.)
Locating Open Circuit: It detects and alerts you immediately where a circuit is open. You can quickly and easily Locate short circuits， open connections， broken wires， current leaks and even trace wires
Checking Short Circuit: You can also find intermittent circuit problems by flexing wires or connectors and listening for a change in the receiver tone
Allowing you general tracing or pinpointing the problem location. It also shows you the direction to the short with its direction indicator，eliminating the guesswork