This digital AC voltage and current meter displays voltage and AC current measurements on a single device. The meter includes a built-in precision transformer, eliminating the need for an external power supply or additional transformer, ensuring convenient and accurate readings. It is commonly used in electrical distribution boxes, distribution cabinets, voltage regulators, eonal equipment, and small household electrical panels. 1. Measurement accuracy: 0.012 characters 2. Measuring range: AC voltage: 80–300V, AC current: 0–50A 3. Power consumption: 0.2VA 4. Measurement speed: Approximately 2 times per second 5. External dimensions: 70 x 40 x 39mm 6. Cutout size: 68 x 38mm (for flush mounting) 7. Model details: (1) 50A Current Model: Transformer is integrated on top of the unit. (2) 100A Current Model: Transformer is separate from the meter, allowing flexible installation based on measurement requirements. The connecting wire can be extended to suit the desired position. Note: When installed on the main circuit breaker (e.g., C45/DZ47 type), this meter enables real-time monitoring of grid voltage and load current. By multiplying current and voltage, users can estimate total power consumption (in watts) of connected appliances. This helps identify high-power usage situations, supporting energy efficiency and preventing unnecessary electricity waste. We sell only the current and voltage meter; all other items shown in images are for illustration purposes and are not included. Due to monitor display differences, actual product color may vary slightly from images. Please allow slight dimensional variations due to manual measurement.