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Support ASCII text and RTU dual protocol automatic identification, no user setting in required. A: RS485 BUS A. B: RS485 BUS B (note the wiring sequence, first connect the power cable to confirm the module works normally and then connect the communication line).
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.