Description: This is a basic multi-functional instrumentmay display the voltage, current, power, capacity, energy, running time, and other physical parameters in real time,over-voltage, under-voltage, over-current and protection can be achieved through reserved relay interfaces. And the meter uses 1.8-inch color LCD as displaydisplay data more comprehensive and cleareasy to observe.This meter is for applications that require monitoring of the output voltage and current as well as charging and discharging batteries. Specification: Bidirectional current detection,for detecting charge and discharge users can easily detect bidirectional current propertiesno need to change the direction of the connection. Power off power memory function,after power off, the number of AH and WH before power off can be memorized,Convenient for observation and measurement. Time and AH data clearing functiondo not affect the next measurement. The percentage of AH can be set without affecting direct discharge measurement With output disconnect function key, flexible on or off output. With over-voltage, over-current, and other extended protection functions. It can be calibrated online, enabling customers to promptly correct the error. In the liquid crystal display can be closed when necessary, reduce power consumption. Size Chart: Input voltage: 6V~75V(Self-powered measurement ) 0~ (Voltage measurement range when externally powered) Voltage Measurement: 0.01V~ Input current measurement range: 0~100A/ 0~200A/ 0~300A/ 0~500A Electric Current: 0.1A~100A/ 0.1A~200A/ 0.1A~300A/ 0.1A~500A capacity measurement range: 0.001AH~65000.00AH energy measurement range: 0.00KWH~99999.9WH External supply voltage range: 6-60V Package Includes: 1 Piece LCD Combo Meter