Features UNIQUE TRANSMISSION TECHNOLOGY: This product is a multi purpose line positioning product designed on the basis of long term practical experience, breaking through conventional concepts and using unique data transmission technology. LONG DISTANCE APPLICABLE: With functions such as line hunting, line pairing, line on off, and lighting, has the characteristics of long transmission distance and clear voice. A practical tool for various communication lines installation and engineering. WIDE APPLICATION: Quickly and efficiently find the desired cable from a large number of harness cables. Widely used in telephone systems, computer networks, video networks, optical fiber communication projects and other engineering occasion of metal wire. ACCURATE AND NOISE FREE: The product is a noise free digital line finding instrument, which adopts the latest digital line hunting technology to achieve accurate digital and noise free line finding. ESSENTIAL FOR FINDING CABLES: The line meter consists of a signal transmitter, a line finder and corresponding adapter lines, which is an essential tool for finding cables in various metal line construction projects such as computer network cables. Specification: Item Type: Network Cable Tester Model: ET613 Material: ABS Receiver Battery: 1 x 6F22 9V battery(not included) Transmitter Battery: 3 x AA 1.5V battery(not included) Uses: Network cable hunting and testing Working Temperature: 0℃~40℃ Storage: -10℃~50℃ Relative Humidity: <90% Main functionAnalog cable trace√Digitizing cable  trace√PoE enabled trace cable√Identify quality of wire pairs and wire connections√Battery voltage polarity check√Battery voltage measurement√PoE voltage polarity check√PoE voltage measurement√Split pair√Breakpoint check√Vibration indication√Continuity test√Tracking signal transmission distance3KmOutput signal level~15Vp-pFlashlight√Adjustable loudness√Low battery indicator (transmitter) Package List: 1 x Transmitter 1 x Receiver 1 x Crocodile Clip Adapter Line 1 x RJ-45 Adapter Cable 1 x RJ-11 Adapter Cable 1 x User Manual 1 x Tool Bag Note: 1. Do not directly search for cables that have been connected to strong electricity (such as wires at home), otherwise will cause people injury and equipment damage.2. Pay attention to lightning protection when using the instrument during thunderstorms, so as to avoid people injury and equipment damage caused by lightning induced by the line.3. The host LCD screen or the POWER light of the line finder flashes, indicating that the battery voltage is low, please replace the battery.4. When the product is not used for a long time, please take out the battery to avoid leakage of battery water and corrosion of battery holder, resulting in poor contact. Package List 1 x Transmitter 1 x Receiver 1 x Crocodile Clip Adapter Line 1 x RJ-45 Adapter Cable 1 x RJ-11 Adapter Cable 1 x User Manual 1 x Tool Bag