power 5A delivery with efficiency and low ripple for reliable DC power across electronic setups Voltmeter functionality: built in voltmeter display with self calibration using an advanced voltage microprocessor 040 V range accuracy within ±0.05 V Easy voltage switching: touch switch to toggle between measuring input or output voltage; all settings saved after power is disconnected Convenient installation: screwterminal connections allow wiring without soldering while preserving existing wiring points Compact and robust: compact module designed for easy integration into projects suitable for hobby, lab, and enclosure mounting Practical applications Bench testing and development: monitor input and output voltage while powering a circuit up to 5 A Battery or portable devices: monitor system voltage to prevent overdischarge or overvoltage DIY projects and educational kits: plug and play voltage measurement with minimal wiring