This product is fully compatible with Raspberry Pi 4 (1GB, 2GB,4GB) and hopes you enjoy hacking with Pi 4 and all of other Pi 4 accessories.
RS-485 is a cost-effective solution in serial communication networks. It can be used up to data rates at 10 Mbit/s or distances up to 1200m at lower speeds. This RS-485 Shield is a standard add-on board for Raspberry Pi. It is integrated with simple screw terminal as well as DB9 interface.
One driver and one receiver per part
EMI noise minimization
Transmission rate up to 2.5Mbps
No driver slew rate limitation
Short-circuit current limited
Compatible : Raspberry Pi 4
Low-Power RS-485 Transceivers
Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks
This module do not contain a Raspberry Pi, if you need one please check here