Telecom Check Telephone Line Dedicated Check Line Survey Line Machine CHINO-E C019 Tester to Alligator Clip Set Equipment<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>It is smart and lightweight，computer lab preferred.</li><li>FSK / DTMF dual system Caller ID</li><li>Three kinds of external plug head</li><li>Take-function，line function</li><li>the last group dial number redial function</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41NzSOrGaTL.jpg" noproxy>