... most basic instrument include an ammeter, voltmeter, ohmmeter and continuety tester. * It controls & programs variey of speed & slow dome cameras ... cameras at the actual camera job site. Specification: Imput Voltage 12+10% or Over Battery Rechargeable Ni-MH(2400mA) ... RJ422 UTP Cable tester: Direct or cross cable, Continuity&Discontinuity, Short, Min-wire, Split pair testing. AC/DC Voltage Max 400V, ...