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1. RS485\u63a5\u53e3<\/h3>\n
2. \u63a7\u5236\u4fe1\u53f7<\/h3>\n
3. \u7ee7\u7535\u5668<\/h3>\n
RS485\u7ee7\u7535\u5668\u5b9e\u9a8c\u7684\u5e94\u7528<\/h2>\n
\u603b\u7ed3<\/h2>\n