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).<br> MEASURING RANGE - Measurement categories include line tracking, short circuit testing, clear/busy/ringing identification. Selectable continuous or variable tone generator<br> CLAMP MODE - For non-terminal cables, clamp mode can be used for direct measurement, as well as for telephone and network line measurement.<br> HIGH ACCURACY - With optional continuous or adjustable generator, the method is simple and the test results are accurate.<br> 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.<br> Colour:Gray-White<br> Material:Plastic + Metal<br> Package Contents:<br> 1x wire tracer<br> 1x connector<br> 1x accessories<br> 1x canvas bag<br> 1x English manual<br> Only the above package content, other products are not included.<br> 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.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store