Vigitron’s Vi00027 is a PoE test tool that can quickly confirm the type of transmitted PoE and the cable configuration. It is compact in size, lightweight, low cost, and easy to use. The Vi00027 has a built-in microcontroller circuit that can precisely detect the presence of Modes A and B for IEEE 802.3af,/at, IEEE 802.3bt, and UPoE. Different PoE-powered devices require different wire configurations depending on their type and class. The method to power PoE connected devices requires that the number of wire pairs used to transmit PoE must be matched by the ability of the connected PoE device to receive the transmitted PoE. Before installing PoE devices, the Vi00027 can determine if the PoE source and cable configuration are matched by the PoE device requirement. This can take the guesswork out of PoE devices installation and save valuable installation and troubleshooting time. The Vi00027 has a built-in keychain that makes it easy to carry and use.