How to power TRB500 via PoE?

Networking Solutions
1

Background/need/observations:

  • I power all my network equipment via an UPS.
  • I need to move my TRB500 to a location with better 5G signal strength.
  • I cannot run a power cable from the UPS to that location but a network cable is ok.
  • I do not want to buy another UPS just for the TRB500 and even if I did it would be hard to integrate/monitor a second UPS to NUP (https://networkupstools.org/) in my setup.
  • I can provide PoE 802.3af (13W) and 802.3at (25.5W) to the powered device (PD)

Caveat:

  • The product info for TRB500 does not state that it supports being powered via PoE.

Question:

3

Hello,

The TRB500 does not support PoE powering options, neither passive nor active (802.3af/at).

Regarding your proposed setup with the PoE splitter and Teltonika’s 4-PIN to barrel socket adapter (PR2PD01B), this would not work as-is, as both components are male connectors, which are not compatible with one another. If you can find a PoE splitter with a female connector that matches the TRB500’s input voltage specifications, then it might be possible to make this setup work.

Alternatively, you could consider an external battery source like the BAT120. However, this would not provide continuous power from your UPS and would require regular charging when depleted.

Perhaps other community members may have additional insights or proven solutions for this specific TRB500 powering scenario.

Best regards,

4

That’s a summary of my post, sort of:

  • No native PoE support
  • Male-male does not connect

Let’s hope that there are some creative people having unexplored paths.

I’m not good with soldering so making a custom cable could need help from a friend.

What’s the name for the connector used by Teltonika, is it a standard readily available one or is it bespoke?

5

By the way, TRB500 is not listed as compatible with BAT120.

Compatible devices

RUT2xx, RUT95x, RUT3xx, RUTXxx, TRB14x, TRB2xx, TSW110, TCR100

6

Could you tell me on which page you found it? On both the TRB500 and BAT120 product pages, I can see them listed as compatible under the Compatible Products lists:

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7

You linked to the product and the quote is from there.

This means that the information may be incomplete, contradictory etc

8

Hello,

Thank you for mentioning this. Yes, the information in this particular section is outdated, and I’ve already inquired to have it updated once our product site launches on the updated platform. For now you should rely on “Compatible products” dropdown list.

Best regards,

9

Not that it will change anything but given that some of the products released about at the same time as TRB500 (e.g. RUTX50) supports being powered via (passive) PoE how come that TRB500 did not get that feature?

I could then have used a 802.3af/at to passive PoE converter…

10

Hello,

I wanted to update you that currently there is an updated version of the TRB500, called the TRB501, which supports passive PoE powering through the LAN port. More information about this product can be found here:

Best regards,

11

Which kind of POE injector would be needed for this device? I tried to find passive 2.5G POE injectors, but have not found any so far.

12

Hello,

You’ll need a passive PoE injector (Mode B), 9–30 VDC, not one of the IEEE-standard (802.3af/at/bt) injectors.

For example, the following passive injector would work:

Best regards,

13

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