12 port rack-mount passive PoE injector for OM Series access points.

This rack mounted injector (POE12PORT) will power 12 Open Mesh access points trough passive (18V) PoE.

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Rack Mount gigabit POE 12 Port Power over Ethernet Injector for Mikrotik Ubiquiti with 48v 120w supply - AliExpress

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8 port passive PoE injector for OM Series access points.

passive PoE Injector for OM Series - MeshTech

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WS-POE-12-48v120w 12 Port Poe Injector - add Power Over Ethernet for 802.3af Cameras, IP Phones, Access Points to Any Switch : : Electronics

UniFi PoE+ Adapter - Ubiquiti Store United States

Planet Injector 24-p Gigabit PoE+ 30W 802.3af - B440W Managed - Leteng AS