Single Pair Ethernet (SPE): Simplify Industrial Connectivity

A new technology enabling easy data transmission is Single Pair Ethernet (SPE). Standard Ethernet cables consist of four wire pairs. SPE only requires one wire pair to transmit power and data. This reduces expenses, weight, and space.

Many sectors benefit from SPE, including factory automation, machinery, buildings, and the Internet of Things (IoT). It connects cameras and sensors among other devices in a simple, modern manner.

What Makes SPE Important?

SPE supports businesses undergoing digital transformation and Industry 4.0. SPE lets you bring Ethernet to tiny devices formerly unconnected.

Advantages of SPE

  • Easy cabling using only one pair of wires
  • Data rates vary from 10 Mbit/s to 10 Gbit/s
  • Transmission distance as far as 1000 meters (10BASE-T1L)
  • Power and data on one cable (PoDL – Power over Data Line)
  • Less expensive, lighter, smaller cables
  • Supports modern industrial protocols like PROFINET and OPC UA

Where Can You Use SPE?

SPE can be handy in a few different areas:

  1. Factory Automation
    You can link sensors, actuators, cameras, and small devices right to the Ethernet. This means you can save space with smaller cables.
  2. Smart Buildings
    It’s great for connecting lights, heating, air conditioning, and security systems. Plus, it simplifies installation since there are fewer cables to deal with.
  3. Process Industry
    You can go long distances – up to 1000 meters – using 10BASE-T1L. It’s a good way to replace older fieldbus systems with Ethernet.
  4. Industrial IoT (IIoT)
    It’s perfect for connecting lots of small devices to the cloud and works well with Industry 4.0 setups.

SPE from Helmholz Benelux

We offer user-friendly SPE products designed for your machines and networks.

  • FLEXtra SLIM SPE-Switch, unmanaged
    • Port Configuration: 4 SPE ports (10BASE-T1L, 10 Mbit/s) and 2 RJ45 Ethernet ports (up to 1000 Mbit/s).
    • PoDL Support: Provides up to 18 W of power over data lines, simplifying device connectivity.
    • PROFINET Compatibility: Meets Conformance Class A requirements, handling LLDP and PTCP functions effectively.
    • Compact Design: Slim form factor (35.1 x 25 x 109 mm) suitable for space-constrained environments.
    • Industrial Reliability: Robust construction ensures dependable performance in harsh conditions.


  • SPE Media Switch
    • Protocol Conversion: Translates 100BASE-TX Ethernet to 10BASE-T1L SPE, supporting cable lengths up to 1000 meters.
    • Rate Limiter Function: Manages network traffic to prevent data loss under high load conditions, ensuring stable communication.
    • Versatile Integration: Compatible with PROFINET, EtherNet/IP, and Modbus TCP networks.
    • Plug-and-Play: Ready-to-use design simplifies deployment and reduces implementation costs.

Start with SPE today!

SPE simplifies your network, lowers costs, and prepares you for the future. With our Helmholz products, getting started is a breeze.