The dt202 clamp meter is designed to be used safely and accurately by anyone, it's design is easy and safe to use with advanced features like auto-ranging built right into the meters design run tests on diodes while still being able to measure ac/dc voltage, ac current residence, and continuity, all with the same device. the clamp meter is designed to be used safely with it's integrated clamp for measuring ac current without having to physically contact the hot part of a wire