Metravi 500 V Digital Insulation Tester is an instrument designed to help prevent hazards such as electric shock and short-circuits in electronic systems. The 500 V Digital Insulation Tester consists of knobs for connecting the test leads and a large digital LCD with a backlight, a test button, a dial or rotary switch, and operating buttons. The Digital Insulation Tester is used to measure how the insulation tester is calibrated using the rotary switch before measuring. The Insulation Tester is highly used for testing electrical equipment such as motors, transformers, etc. Product Attributes: Brand: Metravi Accuracy: ±4% Name of the product: 500 V Digital Insulation Tester Insulation Resistance: 1 GOhm Model: DIT 99C Test Voltage Range: 500 V Display: 3-1/2 Digits 1999 Counts LCD Item Weight: 450 g Dimensions : 18.5 x 8 x 4.5 Centimetres Batteries: 4 AAA batteries