4 in1 DC Voltage Current Power Energy Voltmeter Ammeter Multi-function Digital Electricity Meter 100A, Battery Test LCD Display 1. Measurement function and display: full-view color LCD display, showing simultaneously: four parameters of DC voltage, current, power and power 2. Automatic saving of power measurement data: When the power is off, the meter will automatically save the current power value, and automatically read the value after the next power-on, and continue to accumulate 3. Pre and hold the zero button on the side panel for 5 seconds, the accumulated value of the meter's power will be cleared 4. This meter does not require an external working power supply. The measuring voltage is the working voltage of the meter. 1. Working voltage: 7-20VDC 14-600VDC 2. Measurement voltage: 7-20VDC 14-600VDC 3. Measuring current: 0-20A, 0-50A (requires 50 / 75mv shunt), 0-100A (requires additional With 50 / 75mv shunt) 4. Measuring power : 0-400w 0-1000w 0-2000w 0-12000w 0-30000w 0- 60000w Third, matters needing attention 1. This meter is suitable for indoor use and cannot be used outdoors. 2. The measured voltage and current cannot exceed the rated value. If the measured voltage and current are exceeded, the meter will be burned. Customers order instruments with a current measurement range within 10A (including 10A). The instrument has a built-in shunt. The customer does not need an external shunt when using it. If the customer purchases a meter with a measuring range of 10A or more, and there is no shunt inside the meter, the customer needs to purchase another shunt with the same specifications as the measuring range of the meter. For example: if the purchased instrument has a current measurement range of 0-50A, then you must also purchase a shunt with a size of 50 / 75mV, and whether the measured current is greater than or le than 10A, you must connect the purchased shunt to use! Click on the shunts below or search for shunts in our store and add them to the shopping cart (unle the customer has a matching shunt)