This display instrument is particularly convincing due to its versatile application possibilities. It shows the measurement values for current, voltage, and power simultaneously on a blue illuminated, two-line LC display. The current measurement is galvanically isolated. It can measure currents in the range of -20 to +20 A. Therefore, the panel meter is ideally suited for use in power supplies, chargers, and solar systems, and is especially useful for testing in electric flight, as well as for model ships, model cars, and other electric drives or DC consumers. The device simplifies the determination of the information needed for the successful operation or optimization of flight and driving behavior or other DC motors. The device is connected between the battery and the motor controller/regulator and measures the DC voltage and current of the drive. From the data obtained, the current input power of the drive in watts is calculated.