ONCRO® 1 Pair Passive PoE Injector Splitter Kit, Power Over Ethernet with 5.5 x 2.1 mm DC Power Adaptor Connector Male and Female, LAN RJ45 for IP Camera, Supported Upto 90 ft :
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GeeekPi 1Pair Passive Power over Ethernet RJ45 PoE Adapter Injector + Splitter Cable Kit with 2.1x 5.5mm DC Power Adaptor Connector: Amazon.co.uk: Computers & Accessories
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Amazon.com : AIMHD 4 Pair RJ45 Ethernet Combiner, Cat5 PoE Splitter, 2-in-1 (2 Cameras Over 1 Cable) Adapter for 8 IP Security Camera NVR Surveillance System : Electronics
Amazon.com: Active PoE Splitter - Power Over ethernet Splitter Adapter, 48V to 12V, IEEE 802.3af Compliant, 10/100Mbps PoE Splitter for Surveillance Camera, WAP and VoIP Phone, up to 100m, 2 Pack : Electronics