Constant Power Output for Fivefold Multi-Range(V&I) Operation Natural Convection Cooling Design (Fanless Structure) Preset Memory Function Output ON/OFF Delay Function CV, CC Priority Mode Adjustable Slew Rate For Voltage and Current Bleeder Circuit Control Protection : OVP, OCP, AC FAIL and OTP Support Front Panel and Rear Panel Output Built-in USB and RS-232/485 Interface Optional LAN+GPIB Web Server Monitoring and Control External Analog Control and Monitor Function Remote Sensing Function