4路隔离开关量输入 4路继电器输出485 HX-2190 京金华（北京）科技有限公司

p1Src=//y2.yzimgs.com/uploads/189279/2020329-9154132.jpg?watermark/2/text/5Lqs6YeR5Y2O77yI5YyX5Lqs77yJ56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast