Are there any good IO boards to buy? (DIN rail preferred)

[Nick4 (Nick)]

This seems to be an interesting candidate:

Relay board for Home assistant

Hi @Ales1! Good news! The SmartDEN arrived. I’ll post a detailed review in a few days, but so far first impressions are good. I did a quick workbench setup for relays with pushbuttons on digital inputs (setup directly on module - it doenst depends on HA to work “offline”. It works great. Also, I did the MQTT integration on HA and the module worked like a charm… the feedback time to/from HA <-> SmartDEN is very good. Quick-test-video: SmartDEN - Quick Setup Test - YouTube