1Largearea heat dissipation allows longer operation, increases data accuracy, and is more accurate. 2Compact, light in weight, onehanded operation reduces operator fatigue. 3Onepiece molding without burr, smooth surface, easy and smooth installation. 4Adopts color screen display, the display is intuitive and clearly distinguishable. 5Made of highquality ABS materials, strong and durable, has a long service life. Item Type: Coulomb CounterMaterial: ABSColor: As shown in the pictureModel: VAT-4300Voltage Measurement Range: 0-400VVoltage Accuracy: 0.01VCurrent Measurement Range: 0-300ACurrent Accuracy: 0.01AHow to Use1. Please connect according to the wiring diagram.2. After connecting, please debug the device before testing.3. Store the product after the test. 1 x Instruction Manual2 x Connecting Line1 x USB Cable1 x Display1 x Counter The color of the USB cable is randomly.