Specifications:

Voltage: AC 80-300V and AC 250-450V
Current: Up to 100A
Accuracy Class: 1%+2 (guaranteed accuracy and reliable measurements)
Display: Digital LCD screen
Operating Temperature: -20°C to +70°C
Material: High-quality plastic
Mounting: On DIN rail
Dimensions: Compact, designed for electrical boxes
Weight: ~0.1 kg
Functions:

Two Range Voltage Measurement: Allows measuring voltage in two different ranges (80-300V and 250-450V), providing adaptability for various electrical systems.
Current Measurement: Can measure up to 100A current, making it suitable for most residential and industrial electrical installations.
Precise Measurement: 1%+2 accuracy class ensures reliable measurement, making it a suitable device for requiring accurate data.
Durability and Resistance: Made from high-quality plastic, withstands challenging working conditions, ensuring long-term operation under high and low temperatures.
Clear LCD Display: Easily readable display allows monitoring of voltage and current readings in real-time.
Areas of Use:

Home Electrical Installations: Suitable for use in residential electrical networks to ensure voltage and current stability.
Industry and Commerce: Widely used in industrial premises and offices where monitoring electrical loads is essential for system stability.
Laboratories and Research: Used for research and testing, where precise electrical parameter measurements are required.
Pros:

Accuracy: 1%+2 accuracy class ensures reliable measurement results.
Wide Measurement Range: Can measure in two ranges, suitable for various electrical systems.
Compact and Easy Installation: DIN rail design saves space in electrical panels, and small size ensures easy installation.
Temperature Resistance: Operates under high and low temperatures, making it applicable in different environments.
Easily Readable Display: LCD screen ensures clarity of readings and user convenience.
Cons:

For AC Measurements Only: This device is designed for AC networks only and is not suitable for DC systems.
Limited Functions: Can only measure voltage and current, requiring other devices for additional measurements.
Fixed Screen Type: The display is LCD type and shows information in a single color, so some users may prefer LED or multi-color displays.
The digital voltmeter-ammeter is a reliable and accurate electrical parameter measuring device, well-suited for both domestic and industrial systems. With a wide measurement range and compact design, it fits various electrical panels and ensures reliable monitoring of the electrical system's condition.