This Transistor Devices Incorporated Dynaload model DLVP 130-250-2500 DC Electronic Loads are capable of handling 130 volts across it, 250 amps of current through them at power levels of up to 2500 watts each. The unit can be used to have pulsed load functions with variable frequency and on time, also to simulate a resistor with A/V function. It can be used as ashort and it can be programmed externally. These are all in very good condition. All switches, meters and controls function as designed to. These units are not NIST calibrated; however, the meters are accurate when I measured the voltage externally with a digital multimeter and the current was accurate while monitoring with a shunt at up to 150 amps. I have no supply powerful enough to test it at higher current levels, so I would suggest having the unit calibrated, The DC Load ON/OFF LED is missing so it does not illuminate when the load is turned on to draw current. The units cosmetically are all about an 92 on a scale to 100. These are rock solid sound workhorses and are being sold guaranteed to function.