Can I test NL2 cables with the NL4 Sniffer/Sender?
While the NL4 Sniffer/Sender was not designed to test NL2 cables, you can use the tester on two wire cables. You will get a readout of "A=Green," "B=Red," "C=Green," and "D=Green." Alternatively, you can test two NL2 cables together using a "Y" adapter.