Features Split Type: Easy to install, the transformer is separated from the instrument, and the transformer can be installed according to the actual position of the measurement. (The lead wire of the second end of the transformer can be lengthened to achieve the ideal installation position). Two Wire System: No need to connect the power supply, the red and black wires measure the voltage to the meter power supply at the same time (no need to divide the polarity). With Transformer: Current testing does not require additional purchase of a transformer. The instrument is equipped with a high-precision transformer. Display voltage and current in different colors on the same screen. Function: The l-set trimmer potentiometer in the meter head can calibrate the voltage and current error by itself. The multimeter can clearly display voltage and current at the same time. Place of Use: The battery meter with alarm can be applied to different machines and places such as gardens, homes, offices, etc. It can serve you for a long time and meet your different needs. The practical battery indicator will bring you a good experience. Specification: The range of voltage measurementAC100V-300V The range of current measurement50A(0.00~49.99A) Display modeDouble 0.39 bright LED digital tubeDisplay color(Optional)Red + red/ red + blue/ blue + blueMeasurement accuracy1% ± 2 digitsDisplay0.39 inches LED digital tube display Measurement speed about 2 times per secondDimensions70 * 40 * 30 mmInstallation dimensions68 * 38 mmPower supply line, measuring line lengthabout 150mm "split" transformer lead lengthabout 100mmWorking temperature -10 ~ + 50 ℃Working humidity10 ~ 80% (without condensation)Working pressure80 ~ 106 kPaSunshineNo direct exposure Package List: 1 * Current voltmeter head1 * mutual inductance coil1 * adapter Note: 1.The wiring sequence of the instrument is: the circuit of the current loop is connected first, the 220V voltage is finally connected, after connecting the 220V power supply, it can not touch any parts and circuits behind the instrument to prevent the danger of electric shock. 2.Split: Green terminal is connected to AC transformer CT, two yellow lines are connected to measure AC voltage, do not connect wrong, connect wrong will cause instrument damage, the responsibility is self-conceited. 3.This meter is designed based on the principle of capacitance step-down, because the higher the frequency, the smaller the impedance of the capacitor, so it is not suitable to be used in high-frequency electronic speed regulation, non-city electric sine wave frequency, or other occasions where there are high-frequency components, otherwise it is easy to burn down! 4.When selecting the range, the larger the range is, the greater the range is, the greater the error is. It is suggested that 1.5 times the actual test value be. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List