Features: Monitor battery health effortlessly with this DC8V-30V digital voltages meter featuring double USB port, LED display, and universally compatibility for Libatteries in vehicles or outdoor setups. The high visibility LED screen delivers real time voltages readings and charging statuses icons, while double 5V/2.4A USB outputs ensures simultaneous device charging with overload/short circuit protections. Ideal for vehicle owners, marine enthusiasts, and outdoor adventurers requiring reliability battery monitoring in motorcycles, boats, or solar powered setups. Perfect for automotive dashboards, marine battery compartments, or power stations where instantly voltages tracking and device charging capabilities matter most. Compact ABS housing integrates a precise PCB for seamless installation, combining ruggeds weather resistance with intuitively operate across diverse 12V/24V electrical systems. Specifications: Component: ABS, PCB Size:Approx.47.6x19.4x28.7mm/1.87x0.76x1.13inch voltages measurement ranges: DC8~30V Option Display color: Red Blue White Port: Double USB A port Applicable scenario:car,motorcycle Package Includes: 1pc voltages Monitor note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.