TTL to RS485 Converter Module 3.3V/5.0V Hardware Auto Control For Arduino AVR
2,39 €
(2) compatible with 3.3V and 5.0V signals, can match the module. (1) This module fully considered the 485 bus lightning protection design and anti-jamming design, high EMC, EMI performance, long-distance transmission in the field, the module "access to the earth" side access to the earth, can play well The anti-interference and lightning protection of the role of the 485 bus more secure; indoor short-distance transmission can not access the earth.
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