The Power Probe Scream'N Continuity Tester (PPCT) emits two distinct tones enabling users to differentiate between circuits above or below 10 ohms. The PPCT also emits a warble tone when it detects over 6V. The tool tests wire harnesses, bad connections, relays and diodes, and comes equipped with a 10-ft. lead, and an additional 10-ft. extension. Powered by two AA batteries, the tester offers an automatic shut-off and built-in flashlight.