• Digital Voltmeter Digital Ammeter Dual DC 0-100V 10a SPECIFICATIONS: · Display color: Red & Local LED (dual display), · Display: 0.28" LED digital, · Operating voltage: DC 4.5V~30V, · Measuring range: DC 0V ~ 100V, · Sensitivity (V): 0.1V, · Refresh rate: 500ms / times, · Tolerance: 1% (± 1 digit), · Sensitivity (A): 0.01A, · Operating current: <20mA,