Material: The measuring cable tool is made of PP material, which is sturdy, waterproof, wear and scratch resistant and has a long service life.Head-End : This network cable tester with head-end function makes it easy to test and troubleshoot any signal problems at their source, enabling problems to be detected quickly.Flashlight Lighting: The network analyzer also adjusts the volume and the built-in torch function makes testing easier in low light conditions and can be adapted to any test environment.Low Voltage Warning: The low voltage warning function warns the user when the battery is running low, eliminating surprises during test operations.Multifunctional: The network cable tester is a versatile tool that can trace network and telephone lines, improving work efficiency. Specification: Material: PP Size Chart: 4.6cmx3.15cmx18.5cm/1.81inchx1.24inchx7.28inch 5.65cmx2.8cmx12.7cm/2.22inchx1.10inchx5.00inch Package Includes: 1 Piece Transmitter1 Piece Receiver1 Piece RJ11 to Alligator Clip1 Piece RJ11 Test Line1 Piece Test Line1 Piece Storage Bag1 Piece Headphones1 Piece User Manual Note: Please allow slightly errors 1-2cm differences due to manual measurement.