This handheld portable tester network cables is a practical tool for all types of communication lines and technical personnel. It helps you quickly and efficiently find the cable you need from a large number of cables. This product can be widely used in telephone system, computer network, video network, optical communication engineering and other occasions related to metal wire line. If you need, come and try it, it will not disappoint you. Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. Adopt intuitive LCD screen to see data more clearly, and with three modes to switch freely: POE mode, digital mode and analog mode. POE Testing Function: This tool can be used do test standard and custom POE devices, it can also test POE voltage, power polarity and power mode. Voltage test function: you can click “V” to go do voltage test function, which can measure battery voltage and voltage polarity, then press “V” again to go do POE test mode. You can measure the POE power line and voltage. Adjustable sensitivity: when the received signal is strong, turn off the sound equipment when the hay reception is weak, pick up the sound equipment, which can provide more accurate test data. With the LED flashlight function, you can turn on the flashlight for when the light is dim or when you use it at night, so you can use it normally in dark environments. Technical data: Material: ABS Type: ET613 Power: Tracking of analog cables: Digital cable tracking: PoE-enabled cable tracking: Identify wire pairs and wire connection quality: Checking the polarity of the battery voltage: Checking PoE voltage polarity: Split a pair: Checking the breakpoint: Continuity test: Tracking signal transmission distance: 3 km Output signal level: 15Vp-p Vibration signaling: ET613 ONLY Torch: Volume control: Low Battery Indicator: Package Weight: 389g or 13,7oz List of things do packing: 1 x Transmitter 1 x Receiver 3xCables