Comprehensive Measurement Capabilities: This digital multimeter offers automatic ranging for AC/DC voltage up to 600V and current up to 400A, making it suitable for a wide range of electrical tasks and applications Frequency and Duty Cycle Measurement: With the ability to measure frequency from 10Hz to 10MHz and duty cycle from 0.1% to 99.9%, it is ideal for testing electronic circuits and analyzing signal characteristics Capacitance Testing: Easily measure capacitance up to 40mF, making this device essential for checking capacitors and ensuring circuit performance across various applications Safety Features: Includes true RMS measurement for accuracy with non-linear loads and full-featured protection with over-voltage and over-current alarms to ensure user safety during testing User-Friendly Design: The large LCD display and fast ADC provide clear readings, while an intuitive layout allows for quick function switching, enhancing overall user experience Specifications: Model: UT203+ AC/DC current: 40A/400A AC/DC voltage: 600V Resistance: 400.0Ω~40.00MΩ Capacitance: 40.00nF~40.00mF NCV: non-contact voltage detection function Frequency: 10Hz~10MHZ AC voltage frequency: 10Hz~60kHZ Duty cycle %: 0.1%~99.9% Diode: √ Continuity test: √ LCD backlight: √ Display count: 4000 Clamp head size: 28mm Automatic shutdown: about 15 minutes