Features:  --High-precision LED 4-digits digital display, intuitive.  --Constant Voltage (CV ) & Constant Current (CC ) Function.  --8cm intelligent fan, excellent heat dissipation effect, effectively extend the life of the fan, reduce noise.  --Plastic panel, more beautiful, voltage, current setting coarse and fine knob, make setting more accurate.  --Using advanced technology, effectively reduce the weight of power supply, convenient power supply movement.  --This DC power supply can provide electronic devices of direct voltage from 0 to 30V and current from 0 to 10A.  --Input voltage is switchable(AC110V/AC220V) through the switch on the back of the instrument.  --Multiple protection functions, current limiting protection (OCP), over temperature protection (OTP), over power protection (OPP).  --Energy-saving and efficiency: over 80% power, 40% higher than other liner power supplies.  --Suitable for electron fans, research people and the professional people.  --It can be widely used in production line test, electrical maintenance, aging products, battery charging, laboratories, scientific research and teaching and many other areas.     Note:  Before use, you need to adjust the switch on the back of the power supply to the correct voltage and then use it.     Specifications:  Input Voltage: AC 110/220V±10% 50~60Hz.  Input Current (at 220VAC, at full load): 0.6A.  Output Voltage Range: 0~30V.  Output Current Range: 0~10A.  Load Regulation: 85%.  Dimension: Approx.20*7*15.1cm.  Operating Ambient: -10℃ ~ 60℃ / 30%RH~ 90% RH.  Plug: AU Plug , EU Plug , US Plug , UK Plug.     Package Included:  1* DC Power Supply.  1* Power Cable.  1* User Manual(English)