... outputHGM170Key/Auto start ModuleManual/Auto Start with key, LOP/HET/OS Shut down, negative output.HGM170HCKey/Auto start ModuleManual/Auto Start with key, ... Shut down, Hour meter,negative output.HGM180HCKey/Auto start ModuleManual/Auto Start with key, LOP/HET/OS Shut down, Hour ... meter,positive output.HGM190HCKey/Auto start ModuleManual/Auto Start with key, LOP/HET/OS Shut down, Hour ...