ITEM NAME:Digital Multimeter Dc 0-90V 0-100A Voltmeter Ammeter Power Monitor W Hall S J4B7 Digital Multimeter Dc 0-90V 0-100A Voltmeter Ammeter Power Monitor W Hall S J4B7 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. 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. MEMORY FUNCTION: accumulated capacity will be stored when power off suddenly, you can clean it up or make it full. 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. 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. Display Resolution: 0.1A Current Precision: 3% 5 digits Voltage Precision: 2%5digits Measurement rate: 5time/second Open Holes (mm): 76.5*39.2(mm) Protection Functions: OVP ( Over-voltage protections): 0.01V~90V OPP( Over-power protections ): 0.01W~9.99KW LOP( undervoltage protection): 0.01V~90V OCP( Over-current protections ): 0.1~100A OAH( Over-charge protection ): 0.01AH~9999AH OFT( Over-time protection ): 1min~99hour59min Note:We have more detailed user manuals. If you need an electronic manual, please