<p>ABOUT DETAILS - The gain is norminal 30dB, the input impedance is nominal 100M Ohm, and please notice that wire tracer needs one 9V Battery(NOT INCLUDED).</p> <p>MEASURING RANGE - Measurement categories include line tracking, short circuit testing, clear\/busy\/ringing identification. Selectable continuous or variable tone generator</p> <p>CLAMP MODE - For non-terminal cables, clamp mode can be used for direct measurement, as well as for telephone and network line measurement.</p> <p>HIGH ACCURACY - With optional continuous or adjustable generator, the method is simple and the test results are accurate.</p> <p>AVOID SHORT CIRCUIT - Built-in speaker tube on the probe, insulation probe and built-in loudspeaker can effectively avoid short circuit of conductor and to use.</p> <p>Colour:Gray-White</p> <p>Material:Plastic + Metal</p> <p>Package Contents:</p> <p>1x wire tracer</p> <p>1x connector</p> <p>1x accessories</p> <p>1x canvas bag</p> <p>1x English manual</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>