HIOKI E.E. CORPORATION has developed the LAN CABLE HiTESTER 3665-20 that enables communications technicians to test LAN cables (twisted pair cables. As networks spread, twisted pair cables are being installed in virtually all locations such as buildings, factories, apartments and condominiums, and homes. Accordingly, electrical technicians who previously did not handle communication cables are increasingly required to install twisted pair cables. Furthermore, since network communication speeds are increasing, more accurate installation is required. To make this possible, a LAN cable tester is used. 

The LAN CABLE HiTESTER 3665-20 was developed based on the technology of its predecessor LAN CABLE HiTESTER 3660 in order to offer a tester that can efficiently and accurately test the wire connection, cable length, and connection destination of twisted pair cables.