Double Function Design: Pairs with UT683R Marker for 125KHz interferences resistant cable tracing ( buried / wall wires) and features NCV Not Electric Detections ( 40V+ alerts) for safe live circuit maintenance Professional Protect: 70VDC input Protect prevents damage; ABS anti slip housing suits harsh environments; includes RJ11 / 45 adapters, clips, and carry case for full scenario cabling maintenance Accuracy Testing: Utilizes advanced technology to accurately measure cable length up to 300m with 0.5M resolution, quickly locating faults like shorts, opens, and miswires while supporting wire Order and connector checks via graphical Interfaces Multi Cable Compatibility: Tests RJ11 / R45 UTP / / SSTP twisted pairs and coaxial cables, identifies 802.3Af / at / standards, detects port Electric / power Position for Internet rooms, security systems, and low Electric projects 2.8 " Backlit LCD Display: Shows cable length, wire Order, fault locations simultaneously; tone / Tester / mode switching with adjustable sensitivity for Begin friendly operate, Manufacturer: RGYBAO