The Instek GPS-4303 is 4 channel, 200W output, linear DC power supply. Overload and reverse polarity protection, and an output on/off switch keep the GPS-4303 and it's load safe from unexpected conditions. High regulation (0.01%+3mV) and low ripple/noise (< 1mVrms, 5Hz~1MHz) are maintained for channel 1 and 2 in constant voltage mode. Automated cooling fan speed control minimizes fan noise according to load conditions, ensuring quiet operation. The GPS-4303 Quad Output Linear DC Power Supply is an ideal solution for lightweight, inexpensive bench-top or portable applications requiring high regulation and multiple outputs..