diff --git a/models/Cars_model.php b/models/Cars_model.php
index 211d117..b7206bd 100644
--- a/models/Cars_model.php
+++ b/models/Cars_model.php
@@ -1183,6 +1183,7 @@ class Cars_model extends CI_Model
 	{
 		$this->vars['mqtt']->publish($topic, $msg, 0);
     	trigger_error("mqtt:{$topic}|{$msg}");
+		usleep(100000); // delay 0.1 sec (避免漏訊號)
     }
 	
 	// 產生 CK
diff --git a/models/Pks_model.php b/models/Pks_model.php
index faf0e2f..bb98283 100644
--- a/models/Pks_model.php
+++ b/models/Pks_model.php
@@ -199,6 +199,7 @@ class Pks_model extends CI_Model
 	{
 		$this->vars['mqtt']->publish($topic, $msg, 0);
     	trigger_error("mqtt:{$topic}|{$msg}");
+		usleep(300000); // delay 0.3 sec (避免漏訊號)
     }
 
     // 重新計算
diff --git a/models/Sync_data_model.php b/models/Sync_data_model.php
index d964042..354244c 100644
--- a/models/Sync_data_model.php
+++ b/models/Sync_data_model.php
@@ -30,6 +30,7 @@ class Sync_data_model extends CI_Model
 	{
 		$this->vars['mqtt']->publish($topic, $msg, 0);
     	trigger_error("mqtt:{$topic}|{$msg}");
+		usleep(100000); // delay 0.1 sec (避免漏訊號)
     }
 	
 	// ------------------------------------------------