Triplett / Byte Brothers CTX590 ProTone Probe and Tone Generator Wire Locator with Protective Pouch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Locate cable runs by placing a tone on one end of the cable with the tone generator and detecting the tone on the far side with the tone probe</li><li>Test for continuity (shorts) and the presence of voltage (AC， DC and polarity are indicated on live circuits)</li><li>Switch selectable tone (steady or warbling)</li><li>Probe's ultra bright LED lighted tip lets you see in dark closets</li><li>Insulated tip stops accidental shorts when probing punch down blocks</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41lfxdz%2BViL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41uBHKL4yPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51IjajkSrtL.jpg" noproxy>