Feature: 1. You can use in a series mode can constitute positive and negative power supply output. 2. Use high quality case and new design to make the power supply durable and beautiful. 3. It has a variety of protection functions including current limiting reduction voltage, short circuit protection, temperature protection, etc. 4. Built-in fan cooler, better heat dissipation, longer service life. 5. Dual digital meter assign display, let you see it more clearly. Specification: Condition: 100% Brand New Item Type: DC Regulator Material: Metal+Plastic Color: As shown in the picture @font-face{ font-family:"Times New Roman"; } @font-face{ font-family:"????"; } @font-face{ font-family:"Calibri"; } @font-face{ font-family:"Arial"; } p.MsoNormal{ mso-style-name:????; mso-style-parent:""; margin:0pt; margin-bottom:.0001pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; font-family:Calibri; mso-fareast-font-family:????; mso-bidi-font-family:'Times New Roman'; font-size:10.5000pt; mso-font-kerning:1.0000pt; } span.msoIns{ mso-style-name:""; text-decoration:underline; text-underline:single; color:blue; } span.msoDel{ mso-style-name:""; text-decoration:line-through; color:red; } @page{mso-page-border-surround-header:no; mso-page-border-surround-footer:no;}@page Section0{ } div.Section0{page:Section0;}Output voltage0-30VOutput current0-5AFixed output5V, 3AWorking conditionsTemperature: 0??C-40??C Relative humidity: ??80%Storage conditionsTemperature: -10 ?? C -70 ?? C Relative humidity: ?? 70%Weightabout 8.10kg / 17.9lbAC input and test conditionsInput voltage220VAC??10% 50/60Hz, 110/220VAC??10% convertibleTest conditionsTemperature: 10--35 ?? C; Relative humidity ?? 75%The output range of the main and slave roads and the main technical indicatorsPower supply effectCV??0.01%+3mV CC??0.2%+3mALoad effectCV??0.01%+3mV(l??3A) CC??0.2%+3mA(I??3A)CV??0.02%+5mV (l>3A)CC??0.2%+5mA (I>3A)Ripple and noiseCV??1mVrms (I??3A, 5Hz-1MHz) CC??3mArms(I??3A) CV??2mVrms(I>3A,5Hz-1MHz) CC??10mArms (I>3A)ProtectionCurrent limit and polarity reverse protection:Voltage and current display accuracy?? (1% reading ?? 2 words)Tracking operationParallel mode: Power supply effect: CV??0.01%+3mVLoad effectCV??0.01%+3mV (I??3A) CV??0.02%+5mV (I>3A)Series modePower supply effect: CV??0.01%+3mVLoad effectCV??300mVFixed output powerRated output voltage5V ?? 0.25VMaximum rated output current3APower effect??25mVLoad effect??25mVRipple and noise??2mVrms (5Hz-1MHz)ProtectionWith output limit and short circuit protection Package List: 1 x DC Regulator1 x Intruction Manual1 x Power Cable(AU 220V) Note: 1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.