brand new and high quality Features: It is a basic multi-function instrument that can display different physical parameters, such as voltage, current, power, capacitance, energy, and real-time operation for time. Overvoltage, undervoltage, overcurrent can be achieved through reserved relays interfaces..And the meter uses 1.8-inch color LCD as a display, display more comprehensive data, clear and easy to observe. This meter is for ideal for applications that require monitoring of output and current voltage as well as applications such as charging and discharging batteries. The bidirectional current detection makes it easy for the user who detects the load and discharges to detect the current bidirectional without changing the direction wiring. Power-off memory function, able to memorize the number of AH and WH before power off after power off, which is convenient for observation and measurement. With output off function keys, flexible open or stop the output. With over-voltage, overcurrent for protection. When needed, you can turn off the LCD display, reduce product power. Functional Introductions: 1.Measurement of Battery percentage and remaining battery AH number. 2.Measurement of for DC bidirectional current. 3.Measurement of for DC bidirectional power. 4.Measurement of for DC bidirectional accumulative electric energy. 5.High voltage alarm flicker function. 6.Low voltage alarm flicker function. 7.High current alarm flicker function. 8.Low electricity alarm flicker function. 9.The function of reach the full voltage (this voltage can be set by youself) automatically fill the battery. 10.Zero current can be cleared. 11.Accumulative energy can be cleared. 12.The backlight can be closed or opened. 13.Store data when power off. 14.Hall sensor isolation type measurement,more safe and reliable, easy to install. 15.Using STN full view LCD screen,clear display. 16.Super wide power supply voltage range: DC590V. Notice:If you need electronic manual, please contact us. Specification: Input voltage: 6V~75V(Self-powered measurement ) 0~120V(Voltage measurement range when externally powered) Current Test Range: 0100A/ 0200A/ 0400A Current Resolution: 0.1A/ 0.1A/ 0.2A Power Supply Voltage Range: DC590V Voltage Test Range: DC0300V Voltage Resolution: 0.1V Capacity Test Range: 0999AH Power Test Range: 0999KW Electric Energy Test Range: 0999KWH Measuring Accuracy: 1% Slotting Size Of Panel Installation: 76.0mm x39.5mm/2.99x1.56in Diameter Size Of Sensor Hole: 20mm/0.79in Working Current: When the backlight is open:10MA. When the backlight is closed:4MA. Quantity: 1 Pc Note: No retail package Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement, please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Hall Effect Coulometer