Specifications:

Measuring Range: DC 6-100V
Operating Temperature: -10°C to +65°C
Display Color: Green LED display
Diameter: 22 mm
Accuracy: High precision for reliable voltage monitoring
Functions:

Voltage Measurement: Accurately measures and displays DC voltage levels from 6 to 100V, allowing for monitoring voltage fluctuations and ensuring proper operation of the electrical system.
Compact Design: The 22 mm round indicator is compact and easy to install even in limited spaces.
LED Display: Bright green LED display ensures easy visibility of readings, allowing the device to be used in low-light conditions.
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 for voltage monitoring and ensuring safe system operation.
Laboratories and Electronics Projects: Used as a quick and convenient voltage indicator in various electronics testing and design tasks.
Pros:

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

DC Voltage Only: This device measures only direct current (DC) and is not suitable for alternating current (AC) systems.
Limited Measuring Range: While it covers a wide range, the device is not designed for voltages higher than 100V.
Voltage Display Only: This device displays only voltage; therefore, additional functions such as current or power measurement may require a separate device.
The green 22 mm DC voltmeter is a convenient and versatile device designed for accurately and quickly monitoring direct current voltage in various electrical systems. It is an excellent solution for monitoring voltage in cars, solar energy systems, industrial applications, and laboratory projects, helping to efficiently maintain the condition of the electrical system.