Digital Voltmeter Ammeter Voltage range: 0-100V DC, current range: 0.0-10A. This digital multimeter simultaneously displays voltage and current with red for voltage and blue for current. Designed for flexible installation in various locations. The voltage and current monitor is powered by the measured circuit, eliminating the need for an external power source. Features a built-in trimmer potentiometer for easy calibration. Specifications: Material: Plastic + PCB Color: Black LED Display Color: Red and Blue Size: Approx. 48 x 29 x 22mm (1.89 x 1.14 x 0.87 inches) Mounting Hole Dimensions: Approx. 46 x 27mm (1.81 x 1.06 inches) Wire Length: Approx. 15cm (5.91 inches) Operating Temperature: -10°C to 65°C Voltage Measurement Range: 0.0V to 100V Current Measurement Range: 0A to 10A Power Supply Range: DC 4V to 30.0V Voltage Accuracy: ±0.1% Current Accuracy: ±1%