Green Lee-NC-500-NETcat-Pro-2-Wiring-Tester-600m-Greenlee-NC-500-2-P-The-NETcat-reg-NC-500-Pro-2-Wiring-Tester-is-a-digital-tool-for-fast-accurate-checking-of-cables-wiring-&-network-service-Operated-using-a-back-lit-touch-screen-display-the-Pro-not-only-tests-wiring-continuity-&-proper-pair-allocation-but-measures-the-length-of-cables-&-determines-if-network-service-is-available-P-P-When-used-with-the-NC-510-Accessory-Kit-containing-seven-7-expansion-remote-test-modules-