1Encoder Adjustment Knob: SPS-H/HP 600W series bench power supply upgrades from traditional potentiometer coarse & fine adjustment knobs to encoder knobs making it more convenient to set your desired voltage and current and greatly improve your work efficiency!! (Setting resolution 0.01V/0.01A). 2Output ON/OFF Button: With a single press of the added output button, you can easily switch the output ON/OFF. When you want to adjust settings, you don't have to remove the load or turn off the power each time!! No need to short circuit the output terminals to adjust current either!! 3Functions & Protection: OVP over-voltage protection, OCP over-current protection, Temperature-regulated cooling fan. A handful of convenient functions are loaded within this tiny unit!! 4Compact & Lightweight: power source for electronics is made even more compact, measuring only 13.2(D)x8.4(W)x6.5(H)inches and weighing approx. 6.6lbs, which can greatly save valuable space on your workbench. Perfect for applicat