Wire track: Directly track wire type: RJ45 RJ11 Sequence collation: Open circuit short circuit detection of cable line sequence Network wire collation:Test device used with UTP (Unshield Twisted Pair) and STP (Shield twisted Pair) wiring; Tests for open circuits shorts miswires reversals and split pairs; Allow one person to test T568A T568B 10Base-T and Token Ring DC level test: DC level test telephone line test: Identify the state of working telephone line(clearringingbusy) Continuity: Judge continuty of the cables or wires Switch port collation: Detection switch connected condition