POE+ network power inserter, 8 Port

Nitek PS48 Industrial Ethernet Power Inserter

Industrial PoE injectors

DC/DC Converter GigE Passive PoE Injector

1.8 GHz Extreme Bandwidth DCs / Splitters / Power Inserters (LBEx1G8) - Lindsay Broadband

Intellinet Hardened 8-Port GbE PoE+ Switch w/ PoE Passthrough (561624)

Rugged PoE Switch 30 Watts IP-30 Aluminum Housing Unmanaged 8 Port. This industrial 8 port gigabit PoE switch features 30W of power and is designed to be installed in harsh environments and supports up to a total of 200W power outputs.

StarTech.com Industrial 8 Port Gigabit PoE Switch 30W - Power Over Ethernet

Lot of 4 TP-link TL-POE2412G T240050-2-POE POE Power Inserter, Mounting Hardware

UPOE-400 4-Port Multi-Gigabit 802.3bt PoE++ Injector Hub (160W) - Planet Technology USA

Power-Over-Ethernet adapter (POE)

Tycon Power Systems TP-POE-48GD 48V 24W Gigabit 802.3af PoE Injector - Rowe Wireless Networks LLC

Fastcabling's PoE Powered Switch is powerful device with high power budge to receive power and data from back-end PSU and pass through to front-end IP devices, thus no need for power source present at the edge. Working with IEEE802.3bt PoE injector or PoE switch, the whole system will provide 71W remaining power, expanding network ports for multiple IP powered devices in an easy way.

FASTCABLING PoE Powered Switch, PoE+ Extender, 71W Passthrough Power, Re-use Existed Cat5ecat6 Cable, Ethernet Port Expanding, IEEE8023bt St