The tone generator and probe kit is made of high-quality materials, wear-resistant, corrosion-resistant, small in overall weight, and easy to carry. The gain is normal 30dB, input impedance is nominal 100M Ohm, 200EP inductive amplifier. Note:The wire tracker needs two 9V batteries(NOT INCLUDED)<br> 200EP tone generator wire tracer with probe are widely used in the maintenance of cables and wires. The measurement area includes line tracking, short circuit test, clear/busy/ringing identification. Insulation probe and built-in loudspeaker can effectively avoid short circuits of conductor and make toner and probe kit to use, essential tool for electricians<br> When used with any tone generator, the professional wire toner probe kit has adjustable volume for identifying and tracking wires or cables within a group without insulation! For non-terminated cables, the clamping can be used for direct measurements as well as for telephone and network line measurements<br> Electric circuit tracer has spring-loaded ON/OFF button, easy and convenient to operate; Same group cable tracking is recognized in only 1 second; With optional continuous or adjustable generator, the is simple and the test results are accurate.<br> Colour:As Shown<br> Material:Metal<br> Package Contents:<br> 1set * tone generator and probe kit<br> Only the above package content, other products are not included.<br> Note: Light reflection 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