body { font-size: 75%; color: #000; font-family: Open Sans,Arial,Heetica,sans-senif,SimSun,"宋体"; line-height: 1.3; } dl { margin: 0px; width: 480px; float: left; } dt { width: 100px; height: 15px; float: left; } dd { width: 240px; height: 15px; float: left; } dl dt { margin: 0px; line-height: 22px; color: #474747; font-size: 14px; font-family: tahoma; } #product-desc { width: 100%; height: 209px; } #descrtion { width: 100%; height: 50%; } #details { width: 100%; height: 50%; } .ui-box-title { height: 30px; font-size: 15px; font-family: tahoma; font-weight: bold; background-color: #ddd; text-anchor: inherit; padding-top: 8px; margin: 0px; } .ui-box-body { margin: 0px; } #tbspecifics { border-right: 1px solid black; border-bottom: 1px solid black; } #tbspecifics tr { height: 30px; } #tbspecifics td { width: 100px; border-left: 1px solid black; border-top: 1px solid black; } [For more information] The gain is normal 30 decibels, and the input impedance is nominal 100m s. Please note that the wireer requires a 9V battery (not included).[Measuring range] Measurement categories include lineing, short circuit test, clear/busy/ring recognition. Choice of continuous or variable tone [Clamping mode] For non-terminal cables, the clamping mode can be d for direct measurement, as well as for telephone and network line measurement.[High precision] Continuous or adjustable , simple method, accurate test results.[Avoid short circuit] The built-in speaker tube, insulated probe and built-in speaker on the probe can effectively avoid the conductor short circuit, ing it safer to .Status: 100% newgain: 30dB nominalinput impedance: 100M nominalprobe resistance (minimum):Metal t: 0 splastic fittings: 300 sBattery: 1 X 9V DC battery (NEDA 1604, JIS 006P or IEC 6LR61) (excluding batteries)battery life (normal): 50 hourstemperature:Celsius: 0 Celsius - 50 CelsiusFahrenheit: -122 Fahrenheit - 122 Fahrenheitweight: about 300 grams / 10.6 ozsize: about 231 x 55 x 28 mm / 9.1 x 2.2 x 1.1 inchcolour:Material:plasticPackage Contents:1 xer1 x connector1 x acceoriesOnly the above package content, other products are not included.Note: Light shooting and different displays may ca the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.