Makita Cordless Backpack Vacuum Cleaner, 18Vx2, Brushless – DVC660Z display High quality HEXAGON KEY High quality Function Details Strong Anti Noise Cable Tracing High frequency filter circuit eliminates interference — traces cables accurately on live PoE switches and STP shielded networks up to 600m PoE Switches & STP Wire Tracing Works on active PoE networks and shielded (STP SFTP) cable without signal interference Port Locator with Flashing Signal Transmits flashing signal to identify the exact switch port — LED on switch flashes every ~3 seconds to confirm the target port Single Way Plug Crimping Quality Test Tests RJ45 RJ11 plug crimping quality from one end only — no need to connect the other end Cable Mapping & Status Indication 300m Tests and displays cable mapping results (straight Backpack design improves mobility and reduces user fatigue Why Makita