Siglent SPD-3303C DC Power Supply, TFT-LCD Display, 0~30V 0~3Amp, 100V/120V/220V/230V 3-Channel Linear Programmable Precision Power Supply 4 digits voltage and 3 digits current display, min resolution: 10 mV, 10 mA Three output modes: independent, series and parallel connect Smart temperature control fan, effectively reduces the noise Save/Recall of 5 groups of system specifications, supports data storage