Model Number: 6503 Key Specifications/Special Features: Designed to identify and trace wires or cables without damagingthe insulation, just simply attach the sender unit to the circuitand follow the wires using the detectorThere are a sender and a receiver included in theinstrumentSuitable for all DC circuits up to 42VChecking for short-circuitLine polarity testLocation open circuitBattery voltage indicate

Two 9V batteries required