Offering Auto Range Insulation Tester. Features:C 360 can provide some special help it has 4 digits LCD display, Auto range for MW & W, Automatic zero t1o null lead resistance, Discharge indication beeper for MW range, > 1 mA test current for MW range at rated voltage, > 200 mA, Active Sound Level: £ 40W, Sampling rate: 2.5 times sec, Digital display; 10 timessec bar graph.