Hitachi models:
HU-GN, HUC-ON, HUK-ON, HUN-GM, HUN-OM, 
HUJ-ON2, HUJ-ON3, HUN-ON, HUL2, HUL3, 
LUS-SO, LUS-SL2, LDU,PB-S, LUL-DV,
LUL-DN2,LU1-DV