TTL To RS485 Converter Module Automatic Flow Direction Control Adapter Board♡
6,44 €
With 120 ohm match resistor, short circuit of R0 can enable matching resistor; short circuit is suggested for long-distance transmission. This module give full consideration to the 485 bus protection design and anti-interference design, high and high performance of EMI; For outdoor long-distance transmission, the earth end of module is connected to the earth, that can have very good anti-interference and protection, making the 485 bus more security;For indoor short-distance transmission, the earth end can be disconnected from earth.
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