A.468.575MHZ B.478.575MHZ C.488.575MHZ D.458.575MHZ
A.交流220-20%+15%伏,50赫茲 B.直流220-20%+15%伏,50赫茲 C.交流220-20%+15%伏,60赫茲 D.直流220-20%+15%伏,60赫茲
A.1 B.2 C.3 D.4