RS485采集模块：DAM-3059A-C 石家庄阿尔泰测控科技有限公司

p1Src=//y1.yzimgs.com/uploads/543182/20211019-15012255.jpg&p2Src=//y3.yzimgs.com/uploads/543182/20211019-15017375.jpg&p3Src=//y3.yzimgs.com/uploads/543182/20211019-15022911.jpg"

aa