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Main Chip : MAX485. 12 x MAX485 TTL to RS-485 interface module. It is possible to connect multiple modules together for communication between 2 or more devices(up to 32). Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state.
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.