Waveshare TTL TO RS422 (B) - Rail-Mount Galvanic isolated

Specifications: PRODUCT TYPE:Galvanic isolated TTL to RS422 converter POWER SUPPLY INTERFACE: Power supply: 3.3 V ~ 5 V. Protection: over-voltage, reverse-proof. DEVICE PORT:TTL/RS422 standard compatible TTL: Connector: screw terminal. Transmission distance: about 10 m. Transmission mode: point-to-point. RS485: Connector: screw terminal. Protection:surge-suppress and 15KV ESD protection Terminal resistor: 120R, enabled/disabled via jumper (inside the case). Transmission distance: about 1.2 km. Transmission mode: full duplex mode, point-to-multipoint (up to 256 nodes, it is recommended to use repeaters for 16 nodes or more) Appearance: Case: rail-mount ABS case, suitable for 35 mm DIN rail. Dimensions: 106.0 x 58.6 x 36.0 mm. User manual waveshare.com/wiki/TTL_TO_RS422_(B)?amazon Support If you require technical support, please go to the Support page in the wiki and open a tickets.