Wire Tracer &amp; Circuit Tester with RJ-11 Plug and Alligator Clips (Tone and Probe Kit) by PTE<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Identification of telephone tip and ring lines; detection of line condition: clear， busy， or ringing</li><li>TONE mode to trace electrical wires without damaging insulation</li><li>CONT mode to check for short and open circuits</li><li>Adjustable sensitivity for differentiating wires in close proximity</li><li>One-year warranty</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41MBqxZJiEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41uuZBPkOnL.jpg" noproxy>