Allow to configure network_key. https://github.com/Koenkk/zigbee2mqtt/issues/685

docs/configuration/configuration.md

@@ -53,4 +53,6 @@ advanced:
   rtscts: true
   # Optional: soft reset ZNP after timeout (in seconds); 0 is disabled
   soft_reset_timeout: 0
+  # Optional: network encryption key, changing requires repairing of all devices.
+  network_key: [1, 3, 5, 7, 9, 11, 13, 15, 0, 2, 4, 6, 8, 10, 12, 13],
 ```

lib/util/settings.js

@@ -30,6 +30,14 @@ const defaults = {
          * https://koenkk.github.io/zigbee2mqtt/configuration/configuration.html
          */
         cache_state: true,
+
+        /**
+         * https://github.com/Koenkk/zigbee2mqtt/issues/685#issuecomment-449112250
+         *
+         * Network key will serve as the encryption key of your network.
+         * Changing this will require you to repair your devices.
+         */
+        network_key: [1, 3, 5, 7, 9, 11, 13, 15, 0, 2, 4, 6, 8, 10, 12, 13],
     },
 };
 

lib/zigbee.js

@@ -10,6 +10,7 @@ const shepherdSettings = {
     net: {
         panId: advancedSettings.pan_id,
         channelList: [advancedSettings.channel],
+        precfgkey: settings.get().advanced.network_key,
     },
     dbPath: data.joinPath('database.db'),
     sp: {