RS485 to RS485 HUB 1 to 4 RS485 industrial grade repeater optocoupler isolate
RS-232/ RS-485 to RS-485 Hub, 4 Ports | ATO.com
Renkforce RF-19"-USB2-RS422+485-8 8 + 2 ports Serial hub meets industrial requirements, Steel casing Black | Conrad.com
8 port RS-485 hub
485 repeater photoelectric isolation industrial grade RS485 hub 2 port signal amplifier anti jamming lightning protection|protection| - AliExpress
China Urs102b, Isolated RS485 Hub, Repeater. One Channel Input, Two Channels Output - China RS485 Splitter, RS485 Isolator
Rs485 Hub With 4-port(atc-1204)
RS485 Hub 2-Port Active Industrial Grade RS485 Two-Port Dual-Channel Hub with Photoelectric Isolation and Lightning Protection - China Serial Port RS-232/ RS-485, 2 Port RS 485 Interface Converter | Made-in-China.com