Technical Specifications:

Voltage Measurement Range: 6.5–100V DC
Current Measurement Range: 0–100A DC (with shunt)
Power Measurement Range: up to 10kW
Energy Measurement Range: 0–9999 kWh
Accuracy Class: 0.1
Power Supply Voltage: 6.5-100V DC
Operating Temperature: -10°C to +55°C
Dimensions: 62 x 45 x 40 mm
Nominal Power: 20A/2000W
Functions:

Voltage Measurement (Voltmeter): Accurately measures voltage in DC systems from 6.5V to 100V, allowing real-time monitoring of batteries or other DC devices.
Current Measurement (Ammeter): Measures current up to 100A with a shunt, allowing monitoring of electrical load and ensuring safe device operation.
Power Measurement: Monitors power (in watts) and allows evaluation of instantaneous energy consumption, helping to control efficiency.
Energy Measurement (kWh): Tracks total energy consumption in kWh, useful for monitoring overall energy usage.
4-inch LCD Display: Large and clear screen shows all parameters simultaneously, providing a complete overview of the device's status.
Application Areas:

Solar Energy Systems: Used to monitor voltage, current, and energy consumption of solar energy systems, optimizing energy use and efficiency.
Vehicles (cars, boats, electric vehicles): Allows tracking of DC voltage and current readings, ensuring proper battery use and avoiding overloads.
Electronic Workshops and Laboratories: Used to monitor electrical parameters in various DC devices and experimental projects.
Pros:

Wide Measurement Range: Allows measuring up to 100V DC voltage and 100A current, ensuring versatility and applicability in various DC systems.
Accuracy: With an accuracy class of 0.1, this device is reliable and precise, making it ideal for professional use.
Compact Size: Compact dimensions make it easy to integrate the device into various systems and electrical panels.
Convenient LCD Display: Large 4-inch screen with clearly visible readings helps easily monitor all parameters.
Additional Shunt: The included shunt enhances the device's accuracy when measuring high currents, making it a practical solution for high loads.
Cons:

For DC Systems Only: This device is designed only for direct current (DC) systems and is not suitable for alternating current (AC) networks.
No Additional Smart Features: The device lacks smart connectivity features like WiFi or Bluetooth, making it impossible to monitor readings via a mobile phone.
Quite Limited Operating Temperature Range: Operates from -10°C to +55°C, which may not be suitable for extreme conditions.
The DC digital voltmeter-ammeter with shunt is a versatile and precise device that allows monitoring of various electrical parameters in DC systems. It is an excellent choice for use in solar energy systems, vehicles, and laboratories, where precise monitoring of voltage, current, power, and energy consumption is essential. Reliable accuracy, compact design, and a convenient LCD display make this device easily adaptable to various user needs.