The splitter is in an external location and the original POE switch connects other devices so is impossible to move due to the location of the other devices.

 

Bigger poe feed then? 

On 07/08/2024 at 08:41, Mike TV said:

I have an installation which runs PoE around 80m to a PoE splitter, then off to one camera 1m away and another camera aroun 5m away, which was working successfully for a number of months and now isn't. Any iseas as to why this would stop working?  I am considering installing a new PoE switch to replace the splitter, would this work?

You may need to verify if the voltage at the camera end has dropped below the required level (usually 48V for PoE). You can test this using a multimeter or check the power consumption requirements of the cameras.

Yes, installing a PoE switch instead of the splitter could resolve the issue

At 80m a passive splitter is often the first thing to give up, even if it looked fine for months. Heat, a camera that started drawing a bit more after a firmware bump, or just a tired cheap splitter can tip it over.

Putting a locally powered PoE switch at that far end is the right move. Two practical checks when you fit it:

1. Confirm the uplink port from the house is data-only (PoE off on that port if the switch lets you), so you are not trying to power the far switch from the same long run you already know is marginal.

2. After the change, measure DC voltage at each camera under load. If either sits well under ~48V (or whatever your cameras expect on PoE), the cable or a joint is still eating the budget even with the new switch.

If voltage looks healthy and a camera still drops, swap that short patch lead next before blaming the switch.