Feature: 1. Automatic Identification: This network POE tester has automatic identification for POE voltage(af or at standard). Power supply polarity jumper voltage test ranges from 0 to 60V. 2. Inline Testing: POE tester can do inline test the realtime power consumed by the PD device in a POE power supply system. This section describes how to test the standard POE device, such as the standard, power voltage, power polarity, and mode. 3. Test Short Circuit and Open Circuit: POE tester can test short circuit, open circuit, crossing network cable, can test shielded cable. 4. Switch Line Connecting: If the switch is steady on when you line the switch for POE checker, the line is fluent. If the switch is not on, the line is blocked. 5. Multi Function: POE checker can test DC power, test the voltage, current and power between the power adapter and the electrical equipment. Specification: Item Type: POE Tester Material: ABS Batteries: AAA Batteries x 3 (Shipped Without Batteries) Interface Description: 4 RJ45 Ports, 2 DC Ports Line Test Applicable Cable Lines: CAT5, CAT6 Cable Line Sequence and Fault Test: Yes Network Cable Shielded or Unshielded: Can Be Tested to Distinguish (1 to 1 Lines) Short Circuit Prompt: Yes 1 to 1 Lines: RJ45 Main Interface and Receive Line Test and 1 to 1 Lines Switch to Line: RJ45 Main Interface and Direct Connection to The Switch Test Length: 600m(1967ft) POE Test Test Range: DC5-60V POE Switch Power Supply Line Sequence Prompt: Yes Standard Distinction: 802.3af/At PD Output Interface: Yes Power Test Range: 0-18W Power Test Voltage Test Range: DC0-60V Current Test Range: 0-3A Power Test Range: 0-180W Maximum Working Current: ≤80mA Loop Test: 10M, 100M Switch Remote Adapter Line Interface: RJ45 Input Voltage Protection: DC48V 5mA. Package List: 1 x Tester1 x Test Interface1 x Crocodile Clip Cable1 x CAT5 Cable1 x CAT6 Cable1 x DC Connection Cable1 x Storage Bag1 x Instruction Manual