NM 1 is Power Over Ethernet (PoE). It is fully compliant with the IEEE 802.3af standard as a Powered Device (PD). This means it’s powered through the CAT 5 cable that connects it to an Ethernet switch. Of course, the Ethernet switch used must comply with the 802.3af standard as Power Supply Equipment (PSE); these switches are available from all the major Ethernet equipment manufacturers.
Think about this: the NM 1 does not need a power outlet close by. No AC line voltage wiring. No additiona..