Network cable tester Network cable tester is mainly used to test whether the 8-core line of the network cable is on. There are many kinds of network cable tester. The most common one is a single function network cable tester. Some are more powerful and have a more intuitive LCD display. Some are multi-functional, such as line finder and video tester, as shown in Figure 1-4. However, the methods of use are similar with minor differences. Prices are also uneven, … Continue reading "Network cable tester Line finder"