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Network cable tester.  Features:  STP, UTP cable testing. PoE scanning and PSE type identification. Digital / analog signal testing. Measure the cable length and fault distance. For use with IEEE 802.3af / at and non-standard PoE switch (5~60V). Identifies AT or AF standards of PSE type. LED backlight: the emitter and the receiver have a backlight function, convenient for working in dark environments. Built-in NCV included in the receiver.   Features:  Cable continuity scan: tests open, short, cross etc. for STP, UTP cables, wiremap, fault location. Cable length setting: measures LAN cable length, range: 2.5 m ~ 200 m. PoE testing: POE voltage, power supply polarity, power supply mode, PSE type indicators. Flash function - locates the target network port by the flashing port light on switch/ router. Displays connected switch’s information: network speed and protocol etc.  Specifications:  Test cable type: CAT5e / CAT6a / CAT6 (STP + UTP). Power supply: battery 6R22, 9V (not included) and AAA batteries x3 (not included). Max range (wiremap and scan): 600m. Cable length test range: 2.5 m ~ 200 m. Cable length accuracy: +/- 1.6m. Scan max signal voltage 9+/-1V p-p. Scan frequency: 130KHz. Length breakage location: yes. Analog / digital mode: yes. PoE test range: DC 5-60V standard / non-standard PoE switch. PoE voltage display: yes. PSE type: standard: IEEE802.3af / IEEE802.3at; non-standard. Voltage protection: DC 48V 5mA. LCD display: 128x64 dot-matrix with backlight. Max. emitter working current: