- Comprehensive Measurements: This digital meter displays AC voltage (50-500V), current (1-120A), and frequency (10-99.9Hz) simultaneously, allowing you to monitor multiple electrical parameters at a glance. - No External Power Needed: Designed for convenience, this meter operates independently without requiring any external power supply or transformer. It features a built-in 120A precision transformer for efficient usage. - Accurate Performance: With a high-precision 120A transformer, this meter delivers reliable and accurate measurements across various applications, ensuring you meet stringent performance standards. - Compatibility Alert: This meter is specifically engineered for pure AC 50-60Hz mains power supply. It is not suitable for square wave, inverter output, or modified sine wave circuits, so please use it accordingly to avoid complications. - Practical Applications: Ideal for electricians and technicians, this meter can be used for troubleshooting and maintenance of electrical systems, monitoring power consumption in residential or commercial settings, and ensuring safety compliance in industrial environments.