Judge continuity of the cables or wires<br />Track the cables or wires， and diagnose the break point<br />Receiver the tone signal on the cables or wires (telephone line)<br />Identify the state in the working telephone line (clear ring， busy)<br />Send a single solid tone or a dual alternating tone to the object cables or wires<br /><br /><br />Send tone frequency: 1.5kHz<br />Receive frequency range: 100 ~ 300kHz<br />Power supply: 6F22 (9V)<br />Receiver size: 9 ? x 1 ? x 1 inch<br />Transmitter size: 5 ? x 1 ? x 1 inch<br />Receiver weight: 4 Oz (including battery)<br />Transmitter weight: 4 Oz (including battery)<br />Emitter * 1<br />Receiver * 1<br />English manual * 1<br />Testing line * 2<br />Earphone line * 1<br />Meter bag * 1<br />Color box packaging!<br /><img src="http://img6.eachbuyer.com/x9/p100/cb787_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_7.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_8.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_9.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_10.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_11.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_12.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_13.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_14.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_15.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_16.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb787_17.jpg" />