Specifications:

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

Voltage Measurement: Accurately measures and displays the DC voltage level from 6 to 100V, enabling monitoring of voltage changes and ensuring proper operation of the electrical system.
Compact Design: The 22 mm round indicator is compact and easy to install even in confined spaces.
LED Display: Bright blue LED display ensures easy visibility of readings, allowing the device to be used even 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 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 easy integration of the device 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: Blue LED display is clearly visible even in poor lighting.
Easy to Install: The 22 mm diameter shape is standard, making it easy to install without additional accessories.
Cons:

Only for DC Voltage: 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 only displays voltage, so additional functions, such as current or power measurement, may require a separate device.
The blue 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 automotive, solar energy systems, industrial, and laboratory projects, helping to efficiently maintain the condition of the electrical system.