The Hioki RM3542 is a high-performance insulation tester that offers a wide range of measurement functions and features. It is designed for use in a variety of applications, including electrical maintenance, manufacturing, and research and development. The RM3542 is capable of measuring insulation resistance up to 100 TΩ, and it also features a variety of other measurement functions, such as continuity testing, dielectric absorption ratio testing, and polarization index testing. The RM3542 is a versatile and powerful insulation tester that is ideal for a wide range of applications.