1.MULTIMETER: Digital multi-function meter can be used to test voltage, current, power, capacity time and other physical information; current measurement range is 0~100A; voltage measurement range is 10~90V. 2.HALL SENSOR: voltage current meter adopts non-contact Hall sensors to test current, which is safety and convenient. Moreover, the instrument show date in colorful LCD display and its information is comprehensive and humane. 3.MEMORY FUNCTION: accumulated capacity will be stored when power off suddenly, you can clean it up or full. 4.PROTECTIVE FUNCTION: the voltmeter ammeter can be set parameters for overvoltage protection, undervoltage protection, over current protection, over charging capacity protection and time protection and so on. 5.APPLICATION: The volt ampere tester is quite suitable for monitoring the output voltage and current, as well as applications such as battery charge and discharge. Parameters: Current Measurement Range: 0~100 A Voltage Measurement Range: 10~90 V Display Resolution: 0.1A Current Precision: 3% 5 digits Voltage Precision: 2%5 digits Measurement rate: 5time/second Protection Functions: OVP (Over-voltage protections): 0.01V~90V OPP(Over-power protections): 0.01W~9.99KW (undervoltage protection): 0.01V~90V OCP(Over-current protections): 0.1~100A (Over-charge protection): 0.01AH~9999AH OFT(Over-time protection): 1min~99hour59min Material:plastic colour:black Package Contents: 1 * Multifunctional Bidirectional Meter 1 * Hall Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.