Scoop's TOOL-POE, is designed for testing the PoE on an ethernet cable. This can be used with Passive Injectors, 802.3af, 802.3at, 802.3bt, 568A, 568B or reverse polarity PoE. Mode A and B are also both supported. It is a very handy tool for installers when needing to confirm whether a cable is carrying POE or not. This tool is small enough to fit on a keyring.