Feature: 1. Performance: The voltmeter adopts automatic decimal point shift design, with strong anti interference ability and fast display refreshing speed. 2. Same Screen Display: Voltmeter has compact size, support at the same time, the same screen display voltage and current. 3. Excellent Performance: Exquisite SMT process and clear digital display, bringing you excellent visual experience. 4. Application: Voltmeter can be used to monitor the battery, DC adjustable power supplies, or other equipment voltage and current change status. 5. Durable Construction: High strength ABS construction for maximum durability, high work efficiency and stable performance. Specification: Item Type: Digital Voltmeter AmmeterMaterial: ABSTechnical Parameters: Test Voltage Range: Range: 600V, test range (v) : 0-600V, resolution (v) : 1V, resistance(Ω) >2M Test Current Range: Range 100A, test range (A) : 0.0-99.9A, resolution (A) : 0.1A Product Size: Approx: 70x40x30mm/2.75x1.57x1.18in Installation Aperture: Approx: 68x38mm/2.67x1.49in Measurement Accuracy: 1% (±1 bit) Measurement Rate: ≥500mS/ time Working Environment: Operating Temperature: -10-+65℃ Working Humidity: 10 - 80% (no condensation) Working Pressure: 80 -106kPa Operating Current: <20mA Supply Voltage: DC 3.5-30V Sun Exposure: Not direct exposure Display Mode: All three digits 2x0.39in LED. Package List: 1 x Digital Voltmeter Ammeter Note: 1. The maximum input voltage should not exceed 30V, otherwise there is a risk of burnout.2. Please allow slight error due to manual measurement. Thanks for your understanding.3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.