Features: 1.2 in 1:The lan cable tester is widely compatible with RJ45 computer net wire and rj11 phone wire. it provides intelligent testing service. 2.Form start:The main machine and vice can be easily extended to facilitate long distance testing. 3.Durable:The lan cable tester adopts high quality PC material, which is tough, wear-resistant and durable, providing long service life. 4.Portable:Lan cable tester is compact and lightweight, convenient to carry, not occupying much space. 5.8 LEDs:Lan cable tester is designed with 18 indicator lights. When the lights are flashing in both lists of lights flashing at the same frequency, everything is ok. 6.Scope of Application:Lan cable tester with RJ45 and RJ11 interfaces is designed for testing net wire and telephone wire, widely suitable for home repair and DIY. Description: The lan cable tester is widely compatible with RJ45 computer net wire and rj11 phone wire. it provides intelligent testing service. Specifications: Product name: Internet phone tester Power supply: 9V battery Socket: RJ11/RJ45 Power supply: battery (not included) Product material: PC material Package Included: 1*Lan Cable Tester Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.