Test and troubleshoot telephone, data and coax wiring. Gigabit device capability detection (still detects 10 baseT and 100 baseT too). Cable type, velocity of propagation library, user editable. Power over Ethernet (PoE) detection. Memo pad. Detect split pairs, short circuits, broken and crossed wires. Step TDR technology shows length to open or short of all pairs. Test shielded twisted-pair(STP), unshielded twisted-pair (UTP) and coaxial cables. Test patch cords and remote jacks. Touch-screen control, included stylus slots into main unit. Large icons ensure easy use with your finger too. Large 3 inch (76 mm) backlit high-contrast (user adjustable) monochrome display is highly visible in dark or brightly lit areas. Remote test and ID unit stores in base of main unit. Can identify up to 8 remote test ID units (7 extra available in NC-510 accessory kit along with carrying case). Tone generator with four selectable precision frequency tones, compatible with Greenlee advanced digital signal processing probes. Operates on single 9 V battery with low battery indication.