1Voltage Testing Range: The output voltage test can be varied between 500V 1000V 2500V for different measurements, and the resistance range can reach 20G ohms. The Ac voltage can also be tested. 2Application: Digital megohmmeter is used to measure the insulation resistance of various electrical equipment and insulating materials, such as transformers, motors, cables, switches, and electrical appliances. 3Advantage: Designed with Lcd screen, making the measured value clear and easy to read, with data hold and auto range function. 4Characteristic: Stylish design, improved electronic circuit, more complete functions, higher precision and easier operation. 5Great Testing Tool: Digital insulation tester tool is the best tool for maintenance, testing and verification of electrical equipment.