ESD5550E/ESD5570E----The ESD5550/5570 Series speed control unit is an all electronic device designed to control engine speed with fast and precise response transient load changes.  

(ESD5570E is designed for CUMMINS EFC series.)  

Isochronous Operation/Steady Stability+/-0.25% or better
Supply12 or 24 VDC Battery Systems(transient&reverse voltage protected)
Power Consumption.50 mA
continuous plus acutator current Maximum Actuator Current at 25oC(77oF).10 Amps continuous