Item Type: POE Tester Model: NF488 Battery: 3 x AAA 1.5V (Battery Not Included) Material: ABS Application: Line power test HostDisplay Screen128"64mm Dot Matrix, LCD With Backlight Language DisplayEnglish Key5 Function Keys + 1 Power Key Interface Description4 RJ45, Two DC Ports Diagonal TestApplicable CableCAT5, CAT6 Cable Sequence And Fault TestSupport Network Cable Shielded/UnshieldedTestable Differentiation (1 To 1 Alignment) Short Circuit PromptSupport 1 To 1 AlignmentRJ45 Main Interface + Receiver Test 1 To 1 Alignment Switch AlignmentRJ45 Main Interface + Directly Connected To The Switch Test LengthApprox. 600m / 1968.5ft POE TestTest RangeDC5-60V Nonstandard Standard POE Switch Power Supply Line Sequence ReminderSupport Standard DistinctionNonstandard, IEE? E 802.3af/at PD Output InterfaceSupport Power Test Range0~18W Power TestVoltage Test RangeDCO-60V Current Test Range0~3A Power Test Range0~180W Loop TestCompatible With 10M, 100M, 1000M Switches Lighting FunctionSupport Power Supply 3 x AAA Battery (Battery Not Included) Battery Low Voltage IndicatorSupport, 2.7V Auto Shutdown Function15min, 30min, 60min, OFF Input Voltage ProtectionDC48V 5mA Maximum Working Current80mA Line InterfaceRJ45 Power Supply No Input Voltage ProtectionDC48V 5mA