ET5420A+ ET5410A+ Electrical Load 150V 40A/15A 400W Professional Programmable Digital DC Load Electronic Battery Tester Meter  Feature: 1: Adopt 2.8-inch TFT high-definition LCD screen, display rich content, support Chinese and English display; 2: The operation process is simple and convenient, and with the intuitive interface display system, it is easier to get started; 3: With key lock function to prevent misoperation; 4: With overvoltage, overcurrent and overpower protection functions, overvoltage and overcurrent parameters can be flexibly set to effectively protect the load; 5: It has secondary over-temperature protection function to realize double over-temperature protection of software and hardware; 6: With intelligent fan speed control function, effectively reduce fan noise during work; 7: With output polarity reverse protection; High Performance Load: Provide 6 basic measurement modes of cc, cv, CR, CP, CC+cV, CR+CV, and 8 professional measurement function modes Provide battery test function: it can be used for capacity test of various types of batteries; Provide LED test function: can be used to simulate the performance test of LED power supply; Provide dynamic test function, which can be used to test the dynamic output performance of power supply; Provide scan test function: can be used to test the power output continuity within a certain range; Provide list mode function: can be used to simulate a variety of load state changes; Provide short circuit test function: can be used to simulate load short circuit; Provide battery/power supply internal resistance test function; Provide qualified testing function; Provide remote compensation function; Power-off retention data storage function; Provide one-key entry and one-key exit operation buttons, which are easier to use and operate; Support external trigger input; Built-in buzzer alarm; Online operation can be performed through the standard US communication interface; Package Included: 1*Host 1*Power cord