Digital multimeters (DMMs) are essential tools in electrical and electronic testing, offering precise measurements of voltage, current, resistance, and other electrical parameters. Widely used in automation, industrial maintenance, and laboratory settings, they provide features like auto-ranging, data logging, and connectivity options (USB, Bluetooth) for efficient diagnostics. Common products in this category include handheld multimeters for field use, benchtop models for high-accuracy lab work, and clamp meters for current measurement without circuit interruption. Advanced DMMs may also include temperature sensing, capacitance testing, and true RMS capabilities for complex waveforms.