1 Piece (Red and Blue 10A) DC0-100V 10A LED DC Dual Display Digital Voltage and Current Meter with Cable Welcome to our store! Delivery Quantity: 1 Piece Voltage Measuring Range: 0.0V-100V Current Test Range: 0-999mA, 0-10A, 0-50A, 0-100A (4 ranges selectable) Power Supply Range: DC4-30.0V Voltage Error: ±0.1% Current Error: ±1% External Shunt Specification: 75 milliohms Operating Current: < 20mA Refresh Rate: About 300mS once Display Mode: Dual three-dimensional 0.28" LED digital tube Display Color: Red + Blue. Wiring Length: 15cm External Dimensions: 48 x 29 x 22 mm, Length X Width X Thickness; Mounting Hole: 46 x 27 mm Operating Temperature: -10℃~65℃ Note: For the 50A or 100A range, regardless of whether the measured current is less than 10A, the shunt must be connected to measure the current! Otherwise, it will burn the meter head. Voltage display is normal, current display is 0.00 or 0.0 Please ensure the thick black cable is connected to the negative pole of the battery, and the thick red cable to the negative pole of the load. (Note that the discharge and charging cables are not the same, please refer to the concept of load and power). (The meter head uses original imported chips, factory after very strict testing and calibration to ensure there are no quality problems before leaving the factory. Encountering current display 0 in 99.99% of cases is due to incorrect connection, please be patient and check the wiring carefully) Current display is not allowed If the direct power supply or independent power supply and the equipment power supply are common ground, as long as the thin black line can be disconnected. Connected to the power supply, it is not displayed Where AC power passes through rectification of electricity, a 1000uF electrolytic capacitor must be connected and filtered before supplying power to the head. Determine if the head is good or bad (the following are the two cases of a normal head) Not connected to the shunt, connected to the thin red line and the thin black line to the power supply, the 50A range meter head current display is 50.0 ~ 59.9, the 100A range meter head current display is 100 ~ 109; Connected to the shunt, connected to the thin red cable and the thin black cable to the power supply, the 50A range meter head current display is 0.00, the 100A range meter head current display is 0.0; Other Notes To measure current, it can only be strung on the negative side of the power supply and the negative side of the load. Voltage Range: The 5-wire meter head power supply voltage range is 4 ~ 28V, meaning the voltage connected to the thin red line must not exceed 28V. Regarding the concept of load and power supply. Note: This does not include other content, the color is based on the first picture, the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Wish you a happy life ~ 100% Satisfaction: Our customers are our top priority. If you find any product issues after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.