Network Cable Tester LCD Digital Analog Multifunction POE Wire Tracker Line Finder with Bag 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 function Analog 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 distance 3Km Output signal level ~15Vp-p Flashlight √ Adjustable loudness √ Low battery indicator (transmitter) √ Auto power off (transmitter) Shuts down after about 20 minutes of inactivity Automatic shutdown (receiver) √