Gw instek sps series switching dc power supply gw instek sps 1820 the gw instek sps series are a single output 360w switching dc power supply ovp protects the sps series and their load from unexpected conditions high regulation is maintained at 001 remote sensing adds extra level of precision by compensating cable losses between loads turning the output onoff from external device is available through remote control terminals the sps series are an ideal solution for power