PDM-820***PDM-820ACPDM-820DPPDM-820QCPDM-803APDM-820***多功能仪表/PDM-820AC多功能仪表/PDM-820DP多功能仪表/PDM-820QC多功能仪表/PDM-803DP多功能仪表/PDM-803AC多功能仪表/PDM-803A三相电流表/PDM-803V三相电压表/PDM-8O3P有功功率表/PDM-803Q无功功率表/PDM-803C功率因数表/PDM-801A单相电流表/PDM-801V单相电压表/PDM-801C功率因数表/)