Mastech MS8239C is a versatile digital multimeter designed to measure voltage, current, resistance, capacitance, frequency, duty ratio, and temperature. With its autoranging feature, it simplifies measurements by automatically selecting the appropriate range for accurate readings. The device ensures safety during use by adhering to international safety standards and providing warnings for potential hazards. Its compact size and protective features make it ideal for various electrical and electronic applications, from basic troubleshooting to advanced circuit analysis.