Specifications:

Measurement Range: DC 6-100V
Operating Temperature: from -10°C to +65°C
Display Color: Red LED display
Diameter: 22 mm
Accuracy: High accuracy allows reliable voltage monitoring
Functions:

Voltage Measurement: Accurately measures and displays DC voltage levels from 6 to 100V, enabling monitoring of voltage fluctuations and ensuring proper electrical system operation.
Compact Design: The 22 mm round-shaped indicator is compact and easy to install even in confined spaces.
LED Display: The bright red LED display ensures easy readability of measurements, allowing device use even in poorly lit areas.
Usage:

Cars, Motorcycles, and Other Vehicles: Used to monitor battery voltage and ensure stable operation of the electrical system.
Solar Energy Systems: Suitable for monitoring DC voltage in solar energy systems to track and optimize energy production.
Industrial and Household Electronics: Ideal for various DC electrical systems, allowing voltage monitoring to ensure safe system operation.
Laboratory and Electronics Projects: Used as a quick and convenient voltage indicator in various electronics testing and design tasks.
Pros:

Compact Size: The round-shaped design allows for easy integration of the device into panels, control panels, or other devices.
Wide Voltage Range: Suitable for DC networks from 6V to 100V, providing versatility for use in different systems.
Bright LED Display: The red LED display is clearly visible even in poor lighting conditions.
Easy to Install: The 22 mm diameter shape is standard, making the device easy to mount without additional accessories.
Cons:

DC Voltage Only: This device measures only direct current (DC) and is not suitable for alternating current (AC) systems.
Limited Measurement Range: Although it covers a wide range, the device is not designed for voltages exceeding 100V.
Voltage Display Only: This device displays only voltage; additional functions such as current or power measurement may require a separate device.
The red 22 mm diameter DC voltmeter is a convenient and versatile device designed for accurate and quick monitoring of direct current voltage in various electrical systems. It is an excellent solution for voltage monitoring in vehicles, solar energy systems, industrial and laboratory projects, helping to effectively maintain the condition of the electrical system.