说明：  DTM830三相电量测控仪是一种简单可靠的测控装置，具有数据采集和控制功能。可广泛应用于电力系统、智能楼宇、监控系统、低压配电等自动化领域。
(DTM830 three-phase power Monitor is a simple and reliable measurement and control devices, data acquisition and control functions. It can be widely used in the field of power systems, intelligent building monitoring systems, low-voltage power distribution automation.)