YD820,YD830,YD840,單交流電流智能數(shù)顯表YD821,YD831,YD841,單交流電壓智能數(shù)顯表YD822,YD832,YD842,YD823,單直流電壓智能數(shù)顯表YD833,YD843,YD824,YD834,頻率智能數(shù)顯表YD844,YD825,YD835,YD845,單相功率因數(shù)智能數(shù)顯表YD826溫度智能數(shù)顯表YD836溫度智能數(shù)顯表YD846溫度智能數(shù)顯表YDD-I,YDD-U(U)…交流電流(電壓)變送器YDD-3I,YDD-3U,三交流電流(電壓)組合變送器YDD-P3,YDD-Q3,YDD-P4,YDD-Q4,三相三線有功、無(wú)功及功率組合變送器YDD-P4(Q4)…三相四線有功(無(wú)功)功率變送器YDD-F,YDE-3I,YDE-3U,(3U)…三交流電流(電壓)組合變送器YDE-F,YDE-DI,YDE-DV,(DV)…YDE-I,YDE-U直流電流(電壓)變送器