Ethernet
The wired LAN standard, IEEE 802.3, that gives industrial controllers, gateways and cameras a fast, deterministic and interference-free connection.
Ethernet is the wired networking standard behind nearly every office and factory LAN, defined in IEEE 802.3 and running from 10 Mbit/s up to multi-gigabit speeds over copper or fiber. It is rarely discussed in IoT marketing, yet gateways, industrial PCs, IP cameras and building controllers still rely on it, because a cable gives bandwidth, low latency and immunity to radio interference that no wireless link matches.
Industrial variants such as PROFINET and EtherCAT reuse Ethernet hardware with modified timing to deliver real-time control, and time-sensitive networking extensions add deterministic scheduling to standard switches. Power over Ethernet removes the need for a separate power supply at the device. The obvious cost is cabling: running a wire to every sensor is impractical, which is why wireless technologies exist at all.
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