Features: This instrument is a battery powered insulation resistance tester that can be used to measure voltages, resistance, on-off, diode, and insulation resistance. When measuring insulation resistance, four test voltages to choose from: 100V, 250V, 500V, and 1000V. With functions such as polarity indication, overrange indication, data saving, and automatic saving. Easy to use, it is a precised measuring instrument with 6000 counts, high precised, and build-in backlight. Innovative inclined adjustable stand, which can place on a table for fixed standing. Specifications: Material: Plastic+Silicone Size: approx. 16.8x13.2x6cm/6.61x5.2x2.36inch Model Number: MH15 Display Type: Digital Only Count: 6000-count Battery model: 1.5V AA batteriesx6 (not included) Package Includes: 1 Set Intelligent Insulation Resistance Tester note: Attention: Without batteries. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.