Marathon AVR · Caterpillar AVR · Universal Regulator · Generator Speed Control and actuator · Deep Sea Controller · Generator Controller · cummins partsThe S6700H Speed control Unit is an All-Electronic Device Designed to control engine speed with fast and precise response to transient load changes. Based on a The 56700E Speed Control Unit is an all-electronic device designed to control engine speed with fast and precise response to transient load changes. Based on a The S6700H Speed control Unit is an All-Electronic Device Designed to control engine speed with fast and precise response to transient load changes. Based on a The S6700H Speed Control Unit is an all-electronic device designed to control engine speed with fast and precise response according to the momentary load.