RS-485 shields for Arduino

There are a lot of different variants of RS-485 shields for Arduino:


RS485/CAN Arduino Shield
https://www.waveshare.com/wiki/RS485_CAN_Shield 

RS232/RS485 Arduino Shield
https://www.tinyosshop.com/arduino-rs232-rs485-shield
RS485 Arduino Shield
IO_Expansion_Shield_For_Arduino(V5)

RS422/485 Arduino Shield
https://www.hwhardsoft.de/english/projects/rs485-arduino/

Example of using the shield with Modbus RTU termo sensor.

Example, how to work with not expensive Arduino RS485 Shield ordered from Aliexpress.

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