Byte Brothers tools exhibit 3 qualities: Innovation, Top Quality, and Affordability. Byte Brothers guarantees these 3 qualities plus offers US based customer support, training and quick upgrade and warranty service. Whether you are in the dotcom, telecom, audio/video, electrical or security field, you will find Byte Brothers products designed for you at a price you can afford. The ability of CTX200 Pocket CAT to test CAT5/6 and coax cables, its low cost, versatility and rugged design make it a popular choice for toolboxes. The Cable Test/Tone unit identifies opens, shorts, crosses and split pairs with instant PASS/FAIL results. It also generates a tone for tracing cables. Note: The CTX200 is also available with a lighted probe. Part number CTX200P. The Pocket CAT tests both RJ45 CAT5/6 and coax cables. It is ruggedized for field use with a cushioned case and has no LCD to break. PASS/FAIL results appear in one second and each pair s status is highlighted. A TIA568 test is performed: continuity, opens/shorts, reversals and split pairs. Includes tone mode for tracing and troubleshooting. A tone probe is not included. Other features include an auto off 12 seconds battery saver low battery indicator belt clip battery 9V and zippered pouch. Founded in 1904, U.S. based Triplett Test Equipment continues to be on the leading edge of specialized testers. Whether supplying vital test equipment to the U.S. Signal Corps during WWII, or providing the railroad industry with essential testers to ensure the safety of their crews and the public, Triplett prides itself in developing innovative, reliable, and durable test equipment for every technician that also won t break the bank.