Kimdrox Digital Voltmeter Ammeter Multimeter LED Panel DC Voltage Ampere Volt Amp Meter 2in1 Red/Blue 2-color Display Car Motorcycle Battery Monitoring 12V 24V Built-in Shunt Operating voltage:DC 4.5 ~ 30V Measure voltage: DC 0 ~ 100V Measure current:2A (measure directly,built-in shunt) Display: three 0.28" LED digital tube Display color: Red and Blue (2-color display)