Features: Accurately monitor voltage from 4 to 100V with these 3 digit LED digital voltmeters, featuring reverse Polarities Protections and high visibilities displays for car/motorcycle electrical systems. Small 34mm circular design with 20cm wire enables easy panel installation, while ±1% Precisions and <15mA power consumption ensure reliable voltage measurement for automotive batteries and solar setups. Essential for electricians, DIY enthusiasts, and technicians requiring Immediate voltage monitoring during vehicle maintenance, battery testing, or power system diagnostics. Ideal for troubleshooting electrical systems in car , trucks, boats, and Sustainable energy applications like Solar Module or battery Banks . Perfect for creating multiple point voltage monitoring stations in workshops or mobile installations. Specifications: Material: ABS Diameter: about 34mm/1.34inch Cable length: about 200mm/8inch Minimum startups: 3.8v Package Includes: 5xVoltage Meter note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.