.Quickly and Easily test PoE existence of Ethernet network, .Compliant with IEEE 802.3at/af PoE Standard; .RJ45 connector, simply plug in the cable; .Compact design specially tailored for system integrator and installers. 1. When the PoE Type A lighting, it means endspan (12/36) is providing power, and it?fs 802.3af standard, the output power is 15.4W (PD Max 12.95W) 2. When the PoE Type A & AT Type A are lighting, it means endspan (12/36) is providing power, and it?fs 802.3at standard, the output power is 30.0W (PD Max 25.50W) 3. When the PoE Type B lighting, it means midspan (45/78) is providing power, and it?fs 802.3af standard, the output power is 15.4W (PD Max 12.95W) 4. When the PoE Type B & AT Type B are lighting, it means midspan (45/78) is providing power, and it?fs 802.3at standard, the output power is 30.0W (PD Max 25.50W) 5. When the PoE Type A & PoE Type B are lighting, it means midspan & endspan (4 pairs) is providing power, and it?fs 802.3af standard, the output power is 30.0W 6. When the 4 Leds are lighting, it means midspan & endspan (4 pairs) is providing power, and it?fs 802.3at standard, the output power is 60.0W 7. When there?fs No Leds lighting, it means no PoE.