Zigbee2MQTT Network Key: Changing It Without Losing Groups/Scenes
Changing the Zigbee2MQTT network key re-pairs every device and drops groups and scenes. The startup error that follows, and how to rebuild them.
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troubleshooting
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Zigbee2MQTT Reporting Configuration: min/max Intervals
A slow-updating sensor and a broker-flooding device share the same cause. How Zigbee2MQTT's min/max reporting interval and reportable_change actually work.
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Zigbee2MQTT Network Map Explained: Reading LQI and Depth
Zigbee2MQTT's map shows LQI, depth and zero-value links with no legend. What each number means, which ones are cosmetic, and the few that need action.
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Zigbee2MQTT Battery % Stuck or Wrong: Why It Happens
Zigbee2MQTT battery percentage stuck at 100%, over 100%, or frozen? What battery, voltage and battery_low each measure, and which one to trust.
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Sonoff Power Sensors Stuck? eWeLink’s 2026 Cloud Block
Sonoff power readings frozen in Home Assistant while switching still works? eWeLink blocked the sensor updates in 2026. SonoffLAN 3.11.0 fixes it locally.
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Zigbee2MQTT Install Codes: Why Some Devices Need Them
Hit \"Unsupported install code\" in Zigbee2MQTT? Which devices need one, why the printed code often isn't the whole code, and how to add it locally.
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Zigbee2MQTT linkquality Explained: What the Number Means
Zigbee2MQTT's linkquality is a single-hop number measured at the coordinator. What it really tracks, why the network map disagrees, and when to act.
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Zigbee2MQTT Coordinator Backup and Restore: The Full Guide
Zigbee2MQTT backup and restore works on zstack and ember adapters only. How to trigger one, what's in it, and what a restore really gets you back.
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Changing Your Zigbee2MQTT Channel Without Losing Devices
Zigbee2MQTT broadcasts a channel change to paired devices on zstack and ember adapters. The config edit, sleepy devices, and the backup-file trap.
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How to Write a Custom Zigbee2MQTT External Converter
Zigbee2MQTT pairs your device but shows it unsupported? Here's how to write an external converter that fixes it locally, and what stops it loading.