The Digitus® PoE Tester can be connected to the existing PoE device via a network cable to detect the PoE supply voltage and the PoE mode. The PoE tester display indicates the PoE mode. The PoE tester display guarantees an identification of PSE (Power Source Equipment) End-span PoE Switch, Mid-span PoE Injector or 4-Pair 60 watts. Tests PoE supply voltage according to IEEE 802.3af/at PoE Plus Identifies PSE (Power Source Equipment) End-span PoE Switch, Mid-span PoE Injector or 4-Pair 60 watts PoE Injector via LED display PoE Mode A: 1/2 (-), 3/6 (+) PoE Mode B: 7/8 (-), 4/5 (+)