PoE Tester Mid-span, End-span and 4-pair LED identification, tests IEEE802.3af/at PoE voltageTesting the PoE supply voltage and the PoE mode- PoE Tester- Testing the PoE supply voltage and the PoE mode- Mode A 1/2-, 3/6+, Mode B 7/8-, 4/5+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.