1、[Simple to Operate] The programmable DC power supply allows one key preset voltage and current and one key start output, equipped with clear 2.8 inch display. 2、[Safety Features] This adjustable DC power supply is equipped with over voltage, over current, over temperature, and overload guards, ensuring your equipment remains safe. 3、[Efficient Cooling System] The adjustable power supply comes with smart temperature controlled fan and heatsink, providing efficient heat dissipation. 4、[Precise Encoder Knob] Press the encoder knob to switch setting number position, and turn the knob to set the number, long press the knob to lock keyboard and prevent misoperation. 5、[Versatile Usage] Featuring a 5V 2A USB charging port, supporting charging your devices. Suitable for laboratory work, electronics repair, and educational purposes. Item Type: Programmable DC Power Supply Material: Aluminum alloy Model: ET5420+ Number of channels: Two channels Rated Input: Power: 400W Input Voltage: 0-150V Input Current: 0-20A x 2 CV Mode: Range: 0.1-19.999V, 0.1-150V Resolution: 1mV, 10mV Accuracy: ±(0.05%+0.02%FS) CC Mode: Range: 0-3A, 0-40A Resolution: 1mA, 10mA Accuracy: ±(0.05%+0.05%FS) CR Mode: Range: 0.05Ω-1kΩ, 1kΩ-4.5KΩ Resolution: 10mΩ, 100mΩ Accuracy: ±(0.1%+0.5%FS) CP Mode: Range: 0-400W Resolution: 10mW Accuracy: ±(0.1%+0.5%FS) Dynamic Testing Function: Mode: CC, CV T1 and T2: 50ms-60s Battery Testing Function: Discharge Mode: CC, CR Maximum Discharge Capacity: 9999Ah Resolution: 1mA, 1mA, 10mΩ, 100mΩ Measuring Range: Voltage Readback Value: Range: 0-19.999V, 0-150.00V Resolution: 1mV, 10mV Accuracy: ±(0.05%+0.1%FS) Current Readback Value: Range: 0-3.000A, 0-40.00A Resolution: 1mA, 10mA Accuracy: ±(0.05%+0.1%FS) Power Readback Value: Range: 400W Resolution: 10mW Accuracy: ±(0.1%+0.1%FS) Guard Range: Overvoltage Guard: >21V or >155V overvoltage guard Overcurrent Guard: >3.1 or 42A current guard Overpower Guard: 410W Over Temperature Guard: 85℃ 1 x Programmable DC Power Supply 1 x Supply Plug 2 x Fuse 1 x User Manual