Single Pair Ethernet System Alliance e.V.
"Technology for the Future"
German-registered global industry alliance promoting Single Pair Ethernet (SPE) technology for end-to-end IIoT connectivity from sensor to cloud.
The Single Pair Ethernet System Alliance e.V. (SPESA) is a nonprofit industry association registered in Germany that brings together leading technology companies worldwide to promote, implement, and further develop Single Pair Ethernet (SPE) technology. SPE is a networking standard that transmits Ethernet data — and optionally power via Power over Data Line (PoDL) — over a single twisted pair of copper wires, enabling direct IP-based connectivity from field-level sensors and actuators all the way to the cloud. This architecture is considered a key enabler for the Industrial Internet of Things (IIoT), eliminating protocol gateway complexity and enabling sensor-to-cloud integration at lower cost and weight compared to conventional four-pair Ethernet cabling.
Membership spans multiple countries and includes major industrial and technology corporations such as Huawei, Phoenix Contact, Weidmüller, Rosenberger, and Telegärtner. Member companies collaborate on technical development, interoperability testing, standardization activities, product certification, and cross-industry education and knowledge transfer.
The Alliance covers two related technology tracks. The first is SPE for general industrial automation, supporting speeds from 10BASE-T1L (10 Mbit/s over up to 1,000 meters) to 1000BASE-T1, using standardized IEC 63171-series connector interfaces. The second is Advanced Physical Layer (APL), a two-wire Ethernet variant specifically tailored for process industries such as chemical, oil and gas, and pharmaceutical, where the technology must meet ATEX/IECEx intrinsic safety requirements for hazardous environments. The Alliance conducts APL conformance testing and certification for member products.
The SPESA maintains a public product directory cataloguing SPE components from member companies across categories including connectors and patch cables, cables, switches and media converters, sensors, sliprings, semiconductors, and PCB components. It publishes whitepapers, use case documentation, and a knowledge base, and is active at trade events including Embedded World, SPS Nuremberg, and SPS Atlanta. A 2026 case study from JUMO's SENSILO plant in Fulda documents a deployed SPE architecture for smart indoor climate monitoring. The Alliance's secretariat is based in Germany.
Primary type & automation activities this supplier delivers:
Contact Single Pair Ethernet System Alliance e.V.
WEBSITE
https://singlepairethernet.com/en/HEADQUARTERS
Germany
Company Facts
Founded
-
Primary Role
Research Institute
Company Size
-
Primary Region
Europe
Annual Sales
-
Funding Stage
Grant / Non-profit
Funding Total
-
Certifications & Memberships
Keywords
- Single Pair Ethernet System Alliance e.V.
- SPE Industrial Partner Network
- SPE
- Single Pair Ethernet
- IIoT
- APL
- industrial networking
- standards
- alliance
- sensor-to-cloud
- IEC 63171
- industrial Ethernet
- Advanced Physical Layer
- PoDL
- 10BASE-T1L
- sensor connectivity
- Research Institute
- Control & Software
- Connectivity
- Manufacturing
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