Device-Level Sensing Availability and MQTT Application-Response Latency in an openHAB-Based Smart-Building System
Smart-building systems need reliable sensing, long-term storage, and remote control, but many studies mix up fast network response with slow physical changes in the building. We report measurements from an openHAB deployment at University Lab 1 and University Lab 2 in Greece over 19 months (April 2024–October 2025), wi...