Features: Accurate and reliable, wide test range. Large backlit LCD display, easy to read. With PI/DAR-/ Testing for time display, 100 groups data- storage. Auto-ranging, low battery indicator, auto-power-off, data hold, self discharge. Applicable for insulation- resistance testing of metallurgical,chemical,power sectors. Specifications: Material: plastic Size: approx 17.2x14x6.2cm/7x5.5x2.4in Measuring range: 0.1-200(M) Voltage: 600V Power supply: 8xAA battery Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Insulation- Resistance Tester