Technical Specifications:

Measurement Ranges:

Voltage: 60-500V AC
Current: 0-100A
Frequency: 20-75Hz
Operating Temperature: -10°C to +65°C
Display: Blue LED display showing voltage, current, and frequency
Accuracy: Specified based on precise voltage, current, and frequency measurements
Application Areas: For 220V networks and other AC systems where monitoring voltage, current, and frequency is necessary.
Functions:

Voltage Measurement: From 60V to 500V, allowing for monitoring a wide range of voltage in various electrical systems.
Current Measurement: Measures current strength from 0A to 100A, enabling reliable tracking of network loads.
Frequency Measurement: From 20Hz to 75Hz, ensuring stability control of network frequency.
Bright Blue LED Display: Clearly shows voltage, current, and frequency, making readings easy to monitor.
Indicator Lights: Indicate changes in measured parameters or signal possible deviations.
Usage Purpose:

Home Electrical Network Monitoring: Allows continuous monitoring of voltage and current in home electrical systems, helping to prevent failures and network overloads.
Industrial Equipment Management: Suitable for industrial premises where controlling electrical system parameters is crucial to avoid failures or equipment damage.
Use in Vehicles or Specialized Systems: Can be used in vehicles or other specialized AC systems where accurate monitoring of electrical parameters is important.
Pros:

Wide Measurement Range: Allows measurement of a wide range of voltage, current, and frequency, making the device versatile for various electrical systems.
Accurate and Clear Display: The blue LED display is visible even in dark environments, making measurement results clearly understandable.
Multi-Parameter Monitoring: Monitors voltage, current, and frequency in one device, eliminating the need for additional instruments.
Compact Design: Conveniently installed in electrical panels or control panels, saving space.
Cons:

Only for AC Networks: This device is intended only for alternating current measurements, so it is not suitable for direct current (DC) systems.
Single Color LED Display: Only displays in blue, which may not be suitable for users who require other colors or adjustable lighting.
Limited Additional Functions: The device lacks additional analysis or recording functions that may be necessary for more detailed data monitoring.
The digital AC voltmeter-ammeter with frequency measurement is a convenient, versatile device designed to monitor the parameters of voltage, current, and frequency in AC electrical networks. It is ideal for use both at home and in industry, where reliable monitoring of electrical parameters is essential.