What is Single Pair Ethernet (SPE) and why is it so important for the Industrial Internet of Things (IIoT)? SPE is based on a two-wire cabling protocol offering secure communication over longer distances and with a smaller footprint. These features are central to the question of why SPE is needed. As more and more devices in commercial and industrial applications become “connected”, there are increased demands on space both inside the devices and in the cable ducts that connected them together. And while WiFi has its uses in these environments; it does not offer the security or reliability of a wired communications network.
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