iDter Niō Guardian PoE++ Power and Cable Requirements – Help Center • iDter

The Niō Guardian PoE allows the use of the Ethernet cable that provides data connectivity to the Niõ to also provide it the required power. It uses the latest PoE++ standards, and therefore requires extra care in the choice of components and in the installation to function. The new PoE++ standards require close tolerances both between the wires in a twisted pair, and between twisted pairs, to allow for the transmission of higher power. We emphasize that not strictly following the guidelines below can result in low performance or even failure of the Niõ.

1. Use a 95-watt PoE++ Injector (Recommended injector: TRENDnet 95 watt Gigabit Injector).

2. Use a CAT6 cable with wire gauge 23 (minimum AWG 24 (use <70m indoor)) that is no longer than 92 meters (300 feet), preferably white cable. (P: Maximm Cat6 Heavy Duty Outdoor Cable – Pure Copper). The cable must be of pure copper wire and NOT copper clad aluminum (CCA). For outdoor installation, the cable should be shielded with shielded connectors and rated for outdoor use. Take extra care not to crimp connectors.

3. You must test the completed cable run resistance using a digital multimeter capable of measuring Ohms. This is the only way to check your installation provides adequate power to the Niõ. Even when you use the recommended cables, errors in crimping can cause the power received to be inadequate for normal operation.

The expected resistance values at maximum acceptable cable lengths are below.

· AWG23 (328 feet = 100m) should have resistance of less than 6.70 Ohm

· AWG24 (328 feet = 100m) should have resistance of less than 8.42 Ohm

· Resistances above these figures will indicate a CCA cable, a cable longer than 328 feet (100m), or a bad crimp and will cause the Niõ not receiving adequate power for operations.

· Cables placed on the roof should be shorter than 285 feet (87 meters) in order to allow for higher temperatures.

· The maximum length for an indoor unshielded cable in a room without air conditioning is 285 feet (87 meters)

4. Patch cables (from the Switch to PoE) should be CAT6 3-feet 24 gauge

5. Do not use Ethernet Surface Mount Box/Biscuit box for 90W PoE installations. The splices in the box will introduce resistance in the cable which will reduce the power delivered to the Nio. Most boxes will disconnect the shield of the cable and will affect the grounding of the Nio.

We strongly recommend using an installer knowledgeable about these technologies.

Reference Material