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United States


Compact monitoring device for data cables

Until now, there were only two alternatives for the maintenance of machine parts and plants: either parts were only replaced if they were already defective, or parts that were still functional were replaced at specific intervals as a precaution.

However, thanks to Industry 4.0 and digitalization, there is a more efficient alternative to reactive maintenance: preventative maintenance. The idea behind this is to carry out maintenance measures depending on actual performance. This is also possible for connection systems, such as cables or connectors.

Although cables from LAPP usually last for many years, in situations with highly dynamic, demanding movements with high speeds and strong torsion, it is advantageous and cost-effective to monitor the cables in order to avoid unexpected downtimes which impair productivity.


  • Increase system visibility and capability to plan downtimes for reduced maintenance costs.
  • Plug and play solution for both new and existing networks that does not require a new data line or changes to the cable designs.
  • Reliable IIoT communications thanks to the MQTT interface (for status/data evaluation, settings, WLAN configuration, updating, etc.).
  • Compact design ideal for use in control cabinet.

ETHERLINE® GUARD is the latest innovative solution from LAPP.

This compact device monitors the performance of your highly loaded ethernet cable at risk of failure and displays its current status. Why perform preventive maintenance if it can also be planned in an optimal way? You too can take advantage of the benefits of preventative maintenance!

Check out our quick overview video.


  • For use in Ethernet-based networks for automation technology.
  • For monitoring the service life of a data cable at risk of failure (e.g. function-critical data cable in dynamic applications).
  • Suitable for data cables according to transmission standard 100BASE-TX (with 100 Mbit/s) according to IEEE 802.3.

  • Also suitable for EtherCAT, EtherNET/IP and 2-pair PROFINET applications
  • For use in control cabinets (protection class IP 20).

Take a closer look at these two new products

  • For use with two pair CAT.5e cabling with RJ45 connection
  • Protection class IP 20
  • Space-saving thanks to uniquely compact design

Looking for more information?

Our team of experts can provide additional information and help with any questions.  Simply submit the form below, and we will reach out to you. 

How we have addressed the topic of preventative maintenance with ETHERLINE® GUARD?

Keep reading to find out more about:

  • What it is.
  • What is the purpose.
  • How and where it has proven itself.

LAPP’s ETHERLINE® products are created to provide: secure, fast and reliable solutions for today’s most demanding Ethernet needs.

They are crafted to meet developing Ethernet requirements that will be become more prevalent within future automation applications. Check out our entire line of products; we have something that works for you.