High-performance chipOriginal SP3485 chip, RS422/RS485 baud rate 2M bps, industrial-grade standards ^^ Intelligent signal conversionTTL and RS485/RS422 are automatically converted to each other without manual control, high transmission efficiency. ^^ Double isolation protectionOn-board power isolation and digital isolation chip, short-circuit protection, anti-lightning surge protection ^^ Flexible adaptive design 5.08 mm terminal wiring, complimentary USB cable, 5V power supply compatible with 3.3 /5V TTL signal input, with 120R pads to enhance long-distance signal transmission. ^^ Convenient installationABS material shell, support DIN rail mounting, three LED lights real-time display of the working status, easy to operate.