- LCD displays input voltage, output voltage, output current, output power, and output time for clear, at-a-glance status monitoring. - CNC style adjustment for precise and fast control: output voltage can be set from 0.5 to 30 V and current limit from 0 to 4 A, allowing smooth, flexible tuning for test and development work. - Input reverse-connection protection prevents damage if the supply is connected with wrong polarity. - Output reverse-current protection: no extra diode is needed for charging a battery, enabling safer charging without additional components. - Practical, reliable bench power supply for electronics prototyping, battery charging, and lab testing where exact voltage and current control are required. Use scenarios: - Electronics development and testing: supply precise voltages to circuits, sensors, and microcontrollers, with real time readouts for voltage, current, and power. - Battery charging experiments: safely charge battery packs within 0.5-30 V and up to 4 A, with built in reverse-current protection. - Education and demonstrations: show how voltage and current control affect devices and motors in a controlled, measurable way.