Feature: 1. Easy Calibration: This meter uses SMT technology for good consistency. It includes a calibration potentiometer and zero adjustment potentiometer, allowing user calibration in case of measurement deviation. 2. Simple and Safe Operation: The current sensor features a through-hole design, enabling the wire to pass directly through without cutting or modifying the circuit, allowing non-invasive current measurement. 3. Isolated Design: The current sensor is electrically isolated from the measured wire, enabling safe measurement of current on positive, negative, or individual lines. Voltage withstand capacity up to 2 kV between conductors. 4. Forward and Reverse Current Measurement: The ammeter measures both forward and reverse current. Positive current is displayed with a steady decimal point; negative current is indicated by a slowly flashing decimal point. 5. Wide Applications: Includes two connection wires for easy integration into solar power systems, cars, battery-powered vehicles, and motorcycles. Enables real-time monitoring of battery charge and discharge status. Suitable for various other applications. Specification: Item Type: Digital Ammeter Material: ABS Current Range: 0.0–50A Resolution: 0.1A Power Supply Voltage: 4–30V (Wide Range) Note: Maximum input voltage must not exceed 30V to prevent damage Display Mode: 0.52 inch LED, Red External Dimensions: Approx. 54 x 30 x 21mm / 2.13 x 1.18 x 0.83in Installation Opening: Approx. 47.2 x 27.3mm / 1.86 x 1.07in Measurement Rate: 500ms per reading Measurement Accuracy: ±1% Power Supply Lead Length: Approx. 150mm / 5.91in Transformer Lead Length: Approx. 150mm / 5.91in Minimum Supply Voltage: +4.0V Maximum Supply Voltage: +30V Working Temperature: -10°C to +65°C Working Humidity: 10–80% RH (non-condensing) Operating Pressure: 80–106kPa Sun Exposure: Do not expose directly to sunlight Calibration Method: To ensure accuracy, the device can be calibrated to correct minor deviations caused by component aging or environmental changes. Preheat the meter for at least 5 minutes before calibration. Zero Calibration: With no current applied, adjust the zero potentiometer using a slotted screwdriver until the decimal point flashes rapidly—this indicates optimal zero point. Steady or off decimal point indicates positive offset; slow flash indicates negative offset. Current Calibration: Apply half of the full-scale current, then adjust the amplitude potentiometer on the transformer side until the reading matches a standard reference meter. For higher precision, repeat both steps as needed. Package List: 1 x Digital Ammeter