Everything You Need to Know About IEEE PoE 802.3bt
Power over Ethernet (PoE) offers many advantages over traditional power methods, including time and cost savings, flexibility, safety, reliability and scalability. The main drawback has been the limited amount of available power. Initially, 15.4W of power was sufficient for IP phones and other simple applications at the time, but as more complex applications entered the market, there was an increasing demand for more power.
In 2009, the Institute of Electrical and Electronic Engineers (IEEE) released IEEE 802.3at, specifying 30W of power at the PoE source. Today, the IoT market is expanding at such a rapid rate that even higher power is needed to support additional devices connected to the Ethernet network, such as connected lighting, small cells and 802.11ax access points.