diff --git a/core/function-impl/mogo-core-function-datacenter/src/main/java/com/mogo/eagle/core/function/datacenter/iot/IotManager.kt b/core/function-impl/mogo-core-function-datacenter/src/main/java/com/mogo/eagle/core/function/datacenter/iot/IotManager.kt
index f2dcfbed0b..6fd6f2ee83 100644
--- a/core/function-impl/mogo-core-function-datacenter/src/main/java/com/mogo/eagle/core/function/datacenter/iot/IotManager.kt
+++ b/core/function-impl/mogo-core-function-datacenter/src/main/java/com/mogo/eagle/core/function/datacenter/iot/IotManager.kt
@@ -32,13 +32,13 @@ object IotManager : IMoGoCloudListener, IWriteChainLogListener {
             CallerCloudListenerManager.addListener(TAG, this)
             DevicesManager.registerWriteChainLogListener(this)
             hardwareDeviceBind(SharedPrefsMgr.getInstance().sn)
-        } else {
-            LedSourceManager.registerWriteChainLogListener(this)
-            LedSourceManager.init(true, isB2)
             if(isB4){
                 CuLedManager.init()
                 CuLedManager.registerWriteChainLogListener(this)
             }
+        } else {
+            LedSourceManager.registerWriteChainLogListener(this)
+            LedSourceManager.init(true, isB2)
         }
     }