Network Cable Tester, Preciva Ethernet Wire Test Tool, Lan RJ45 RJ11 Cable Testing, cat5 cat5e cat6a, Powered via USB

[Widely & Easily Used] Precision network cable tester suits for RJ45 Ethernet (Cat5/Cat5e/Cat6a/Cat7) and RJ11 telephone cables. Sequentially illuminates LEDs for clear wire mapping, instantly identifying open and short circuits, miswires, and reversed pairs. Perfect for both pros and beginners. [POE Anti-Burn & Fault Detection] Features exclusive 100M PoE Anti-Burn Protection, safely testing connected cables without fear of damage from Power over Ethernet voltages. [Dual Power & Long-Distance Testing] LAN network cable tester support dual power supply: 9V battery (NOT INCLUDED) or powered via USB. The detachable Remote unit allows one-person testing over long distances, time & labor-saving. [3 Adjustable Speeds & LED Work Light] In the automatic scan test state, short press the FUNC key once to flexibly switch Fast, Medium and Slow 3 test speeds. Plus, the built-in bright LED work light illuminates dark cabinets and cramped wiring spaces [Durability & What's Included] Housed in a durable, drop-resistant casing to withstand tough job site conditions. Package Includes: 1 x Master Unit, 1 x Remote Unit, 1 x User Manual. Note: 9V Battery is not included.