ET54A+ added functions:  Dedicated qualification test function  Voltage remote compensation function  Battery internal resistance test function  Power supply internal resistance test function  Operation convenience: one key to enter/one key to exit the test function and setting operation, one key to switch the size range  You can set the key tone, buzzer alarm on and off  100V~240VAC directly connected to electricity, no need to switch high and low voltage switches ET54A+ programmable DC electronic load provides 1mV/ 1mA high resolution and precision with superior performance, which can be widely used in charger, switching power supply, linear power supply, battery and other production line testing, as well as the research institutions and other research and development fields. Features: User-friendly Design: It adopts 2.8-inch TFT LCD screen with rich display contents; Support Chinese and English; The operation process is simple and convenient, and with visual interface display system, it is easy to get started. Key lock function to prevent misoperation; High Performance Load It provides CC, CV, CR, CP and CC+CV, CR+CV& 65292;Six basic measurement function modes; six professional measurement function modes; It provides professional Battery test mode; It provides professional LED test mode; It provides professional Tran test mode, can test the dynamic output performance of the power supply; It provides professional scan test mode, can test the continuity of power output within a certain range; It provides professional list test mode, can simulate a variety of loading status changes; It provides professional short circuit test mode, can be used to simulate load short circuit; Provide battery/power internal resistance test function; Provide conformity testing function; Built-in buzzer alarm; Maintain data storage in case of power failure; Remote operation via USB; Equipped with software remote compensation Multiple safety protection: It provides overcurrent, overvoltage, overpower, over temperature protection. The overvoltage and overcurrent parameters can be set flexibly, so as to effectively protect the load; It has intelligent fan speed control function, which can effectively reduce the fan noise when it is working. With input polarity reverse prompt; General technical specifications: Power supply voltage: 100Vac~240Vac& 65292;50/60Hz Display: 2.8-inch TFT LCD screen with resolution of 320×240 Operating temperature: 0& 8451; to 40& 8451; Storage temperature: -10& 8451; to 70& 8451; Relative humidity: < 80% Interface: standard USB Size: 90mm×190mm×300mm (width × height × depth) weight& 65306;2.9kg& 65307;