Hioki DT4253 True-RMS Digital Multimeter, 1000V AC/DC with Temperature, Capacitance, and Frequency Digital Multi Meter +-0.3% DC V basic accuracy, wide 40 Hz to 1 kHz AC V frequency characteristics Low-pass filter (100 Hz/ 500 Hz) cuts high harmonics Includes multiple measurement functions such as temperature (only for DT4253), capacitance, and frequency Measures large currents with optional clamp on probe (only for DT4251,DT4253)