1. Communication interface
RS485 interface。
2. Physical layer protocol
Physical layer use UART to RS485 communication interface
Baud rate is 9600, 8 data bits, 1 stop bit, no parity
3. The TTL interface of this module is a passive interface, it requires external 5V power supply, which means, when communicating, all four ports must be connected (5V, RX, TX, GND), otherwise it cannot communicateRS485 interface。
2. Physical layer protocol
Physical layer use UART to RS485 communication interface
Baud rate is 9600, 8 data bits, 1 stop bit, no parity
4. Working temperature
-20’C ~ +60’C
-20’C ~ +60’C
