Basic
Wi-Fi
A wireless local network based on IEEE 802.11 standards.
In industrial practice
In a factory, coverage, interference, roaming, security and availability must be measured in the field.
Contingency mode: public pages and downloads remain available; login, community, and server data may be unavailable.
TECHNICAL GLOSSARY
Connectivity
Wi-Fi, Bluetooth, mesh networks and Ethernet: the radios and interfaces that connect the ESP32 to the rest of the plant.
terms in this category
Basic
BLE
Bluetooth Low Energy, a short-range technology optimized for low power consumption.
In industrial practice
It is useful for commissioning, nearby sensors and maintenance, not as a replacement for the entire industrial network.
Related:Bluetooth ClassicMatter
Intermediate
Bluetooth Classic
Bluetooth BR/EDR mode intended for continuous connections and traditional profiles.
In industrial practice
Only some ESP32 families provide Classic; confirm this before migrating hardware.
Intermediate
Zigbee
A mesh networking protocol built on IEEE 802.15.4.
In industrial practice
It suits sensors and building automation but requires planning the coordinator, routers and channels.
Related:ThreadMatterIEEE 802.15.4
Intermediate
Thread
A low-power IPv6 mesh protocol based on IEEE 802.15.4.
In industrial practice
Thread devices reach other networks through a Border Router.
Intermediate
Matter
An interoperable application standard running over IP, usually Wi-Fi, Ethernet or Thread.
In industrial practice
Matter is software and certification; it is not an ESP32 radio or physical peripheral.
Do not confuse
Do not confuse Matter with Thread: Thread is a network; Matter is the application layer.
Advanced
IEEE 802.15.4
A low-power radio standard used by Thread and Zigbee.
In industrial practice
Having the radio does not guarantee that every protocol stack is available in the chosen framework.
Basic
Ethernet
A family of wired networking technologies standardized by IEEE 802.3.
In industrial practice
It is common in gateways for predictability and segmentation, but it requires a protection and grounding design.
Related:Ethernet MACPHYPoE
Advanced
Ethernet MAC
The digital controller that implements the Ethernet link layer.
In industrial practice
An integrated MAC still needs a PHY, magnetics and connector to form a physical interface.
Do not confuse
Do not confuse an integrated MAC with a ready-made RJ45 port.
Advanced
PHY
A circuit that converts the MAC's digital data into electrical signals on the physical medium.
In industrial practice
PHY, clock, magnetics and layout choices influence EMC and reliability.
Related:Ethernet MACEthernetEMC/EMI