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JESSINIE RS422 to TTL Mutual Conversion Module TTL to RS422 Bi-Directional Signal Module Full Duplex 422 to Single-chip MAX490 to TTL Module update_march2023 Cablemax RS-232 LED link TesterJESSINIE RS422 to TTL Mutual Conversion Module TTL to RS422 Bi Directional Signal Module Full Duplex 422 to Single chip MAX490 to TTL Module Module size: 5. 0cm 2. 7cm Product descriptionA power indicator and data transceiver indicator. Data status panoramic view. The module TTL side uses 5V DC power supply RXD TXD compatible 5V logic signal. RXD receiver output: If A > B 200mV, then RXD is high; If A TXD driver input: The low level forced output Y on