Fluke Networks PTNX2-DLX Pocket Toner NX2 Coax Cable Tester Deluxe Kit Pocket-sized toner identifies and tests VDV cable to detect continuity, short and open circuits, and AC/DC voltage Removable coupler on the tone generator cap allows for testing male and female connectors Tests live cabling and is protected up to 52V Buzzers in both the probe and detachable tone generator indicate continuity LED display indicates continuity, shorts, opens, and the presence of AC and DC voltage