NOYAFA NF-488 POE Tester for Power Over Ethernet, Network Cable Continuity Checking, Switch Loop-Back POE Detector. Noyafa NF-488 Network PoE Checker Over The Ethernet Cat6,Cat5 Lan Cable Tester. NF-488 PoE Tester is a practical tool for installation and maintenance of technical personnel in security monitoring, conmunication wires, integrated wiring and other weak current systems.
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