This unit is a TTL to RS485 convertor. The RS485 is a standard defining of the electrical characteristics of drivers and receivers for use in serial communications systems, and widely used in an industrial field, and multipoint systems are supported. If the outside serial device is RS485 standard, you can attach this unit onto an M5stack, to implement the communication with an RS485 device by TTL protocol. Features * Built in MAX485/SP485EEN * Input DC 12V * Program Platform: Arduino, UIFlow (Blockly, Python) * Two Lego-compatible holes Package Contents * 1x RS485 Unit * 1x Grove Cable Specifications Resources Parameter Net weight 8g Gross weight 21g Product Size 40 x 24 x 14mm Package Size 67 x 53 x 12mm Resources * Documents https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2023-03-07 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2023-08-23 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2023-12-27 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2024-09-19 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2024-11-29 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2024-11-30 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2025-08-05 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2025-11-28 https://elecena.pl/product/22723928/m5stack-rs485-to-ttl-converter-unit 2025-11-29