The UNI-T UT-516B is a professional-grade digital insulation tester designed for electrical maintenance and safety testing. With a maximum test voltage of 12kV, it delivers reliable resistance measurements across high-voltage applications in industrial, commercial, and residential settings. Key features include a large LCD display for clear readings, multiple measurement ranges for versatility, and durable construction built to withstand demanding work environments. The tester supports quick diagnostics on cables, motors, transformers, and switchgear to identify insulation faults before they become critical failures. Ideal for electricians, maintenance technicians, and electrical contractors who require accurate, portable testing equipment. Compact design allows easy transport between job sites while maintaining professional-grade performance and safety standards.