[Introduction]：E810-R41 is a 4-channel RS-485 to 1-channel RS-485 buffered isolation repeater launched by Ebyte. It uses photoelectric isolation technology to protect the master and slave stack devices from interference. The circuit is designed using EMC level 3 standards, which can effectively isolate the damage caused by lightning strikes and static electricity to the equipment. No configuration is required, and transparent data transmission between the master and slave interfaces.