PoE - powering Unipi controllers via Ethernet

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19/2/2020 Are you interested in the advantages and possibilities offered by powering Unipi controllers through Ethernet (PoE)? This article contains all the info you need. 

The PoE abbreviation stands for "Power over Ethernet", aka powering a device via network cable. With this solution, the end device (ie. a controller) does not need a separate power supply cable. Aside from decrease of cabling expenses and easier installation the PoE also enables you to power devices placed in locations without electric sockets, such as outdoor CCTV cameras, monitoring sensor stations, public Wi-Fi routers etc. 

PoE advantages

  • allows for powering devices in locations lacking a 230V socket
  • allows for switching the power supply remotely
  • recommended PoE splitters feature galvanic isolation of the power supply

PoE disadvantages

  • requires knowledge of network elements configuration
  • dependent on a single source of voltage - if the switch fails, all connected devices will lose power


What to do if you need to install an Unipi programmable logic controller into a location without 230V source? For this case, we made a simple and brief guide for powering Unipi controllers via Ethernet connection. The guide is available on this link.

The IPOE-162S PoE splitter and GSD 908HP network switch were used for the guide. However, you can use any other PoE splitter and 802.3at PoE+ compliant network switch. 

Showcase PoE project schematic

Further info

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