Rapid digital single output bench dc power supplies hy3000m and hy5000m series rapid hy3003 m the rapid hy3003m is a digital single output bench dc power supply this linear mode variable dc power supply is of a very high quality constructionthis m version uses microprocessor technology to allow the adjustment of the amps and volts with touch technology instead of dials the controls are splash and dirt resistant and when set they cannot be changed accidentally the power supply is var