This Extech insulation tester measures up to 10G and has test voltages of 250V, 500V, and 1000V. Lo-Ohms for testing connections, an analog bargraph for viewing trends, AC/DC Voltage measurement to 999V, manual data record/recall function (9 sets), and a live circuit display warning and beeper are among the features. It can be used to test motors, transformer windings, instruments, and appliances, as well as to check for moisture in wire and cable assemblies, evaluate a new wiring installation safely, and check for carbon tracking in breakers, relays, and switches. Extech Insulation Testers have a high sensitivity, ensuring accurate monitoring of low resistance motor windings. Includes carrying bag, test leads, and 6 AA batteries. Buy this professional Insulation Tester at the cheapest price from our online store. Our customers receive high-quality products from us.