Source google image: https://ae01.alicdn.com/kf/HTB1Qh50ywaTBuNjSszfq6xgfpXaE/Industrial-photoelectric-isolation-4-channel-RS485-line-divider-sharing-device-485-splitter-485-HUB-1-input.jpg_640x640.jpg
Isolation 4+1
Source google image: https://ae01.alicdn.com/kf/HTB1Qh50ywaTBuNjSszfq6xgfpXaE/Industrial-photoelectric-isolation-4-channel-RS485-line-divider-sharing-device-485-splitter-485-HUB-1-input.jpg_640x640.jpg