NodeRedNinja: This might be a silly question, but can you run it offline? I'm setting up a backup system and unsure about the setup.

44 minutes ago · profile

Just got this working! The key is configuring the MQTT broker properly. Should have asked sooner.

See also

• HA: where do you host your MQTT broker?
• Recommendations for a good hub or bridge?
• Issue: devices going offline in Node-RED