NOYAFA NF-488 Power over Ethernet (PoE) Checker Tester. Identify at af Standard Voltage Current Power Continuity Loopback - Identify af at Standard Automaticall, Cable Continuity Testing - Test the short circuit, crossover and open circuit status for STP, UTP lan cable, Loopback Testing, Lamp - A lamp is equipped in main unit, helps work in darkness Više informacija na linku