... to many different situations, especially for projects' as debugging device in CCTV monitoring systems. It is helpful for projects ... most basic instrument include an ammeter, voltmeter, ohmmeter and continuety tester. * It controls & programs variey of speed & slow dome ... 2400bps~38400bps Can control the RJ485 or RJ422 UTP Cable tester: Direct or cross cable, Continuity&Discontinuity, Short, Min- ...