Two 0 to 30 VDC, 2 A sections capable of independent, series or parallel operation. One 4 to 6.5 VDC, 5 A section. Switchable series/parallel operation (30 V sections). Adjustable current limit controls (30 V sections). Two 4 digit LED displays, one reads volts or amps of "B" supply, one reads volts or amps of "A" supply or 4 to 6.5V supply. Unique variable tracking, B track A at 5% to 100%