Standard Pack = 1 piece(s). Insulation Tester Type = Digital Megohmmeter; Insulation Testing Voltage = 50V, 100V, 250V, 500V, 1kV; Insulation Testing Resistance = 0.01Mohm to 10Gohm; Operating Temperature Min = -20°C; Operating Temperature Max = 55°C; External Height = 50mm; External Width = 100mm; External Depth = 203mm;