6CH Input & Output Module, (Buspro)
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/dry-contact-inputs/hdl-msc06-432-6ch-io-module
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/dry-contact-inputs/hdl-msc06-432-6ch-io-module