RS-5500 Insulation meter is a multi-function high precision insulation resistance measuring instrument designed for electrical maintenance personnel. The meter has double insulation protection or super insulation protection, high safety performance, adopts high precision digital display, wide measurement range, high resolution, high accuracy, the measurement accuracy can reach ±(3%+5), the maximum can measure 2000MΩ, can measure DC resistance, AC resistance, open circuit alarm, insulation resistance and so on.