Provides 3 groups of output of 60V to 150V in 1V steps or 10 to 150mA constant current at 5mA step. Voltage display is by 3-digit green LED 7-segment. The transformers are protected by thermal fuses and the primary is protected by a 1A slow blow fuse. Output current is limited to maximum of 150mA. All three groups of outputs are monitored and controlled by micro-processor. Allows you to produce excellent results from your DNA electrophoresis experiments. Runs gels in 30-40 minutes at 70 volts.