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. 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 Current Test Range: 0-3A Power Test Range: 0-180W Maximum Working Current: ≤80mA Loop Test: 10M, 100M Switch Remote Adapter Line Interface: RJ45 1 x Tester 1 x Test Interface 1 x Crocodile Clip Cable 1 x CAT5 Cable 1 x CAT6 Cable 1 x DC Connection Cable 1 x Storage Bag 1 x Instruction Manual