Megger manufactures insulation tester with durability, megger mit300 series. The product is a developed instrument that is specifically designed to meet the needs of the electrical contractors. The product is durable and easy to use, but also incorporates a comprehensive set of features, designed to ensure operator safety. The range includes four models and all of which offer automatic discharge of the circuit after testing, audible and visual warning. These products are specially deigned for electricians. The salient features of the insulation tester with durability are as follows: