diff --git a/Bat_EV_SDL _V2/form.json b/Bat_EV_SDL _V2/form.json
index 119f2b9..05f435f 100644
--- a/Bat_EV_SDL _V2/form.json	
+++ b/Bat_EV_SDL _V2/form.json	
@@ -94,9 +94,9 @@
         "type": "NumberSpinner",
         "name": "UpdateInterval",
         "caption": "Neuberechnung alle",
-        "suffix": "Minuten",
+        "suffix": "Sekunden",
         "minimum": 0,
-        "maximum": 1440
+        "maximum": 86400
     }
     ]
 }
diff --git a/Bat_EV_SDL _V2/module.php b/Bat_EV_SDL _V2/module.php
index d80e5ac..5b1518a 100644
--- a/Bat_EV_SDL _V2/module.php	
+++ b/Bat_EV_SDL _V2/module.php	
@@ -42,8 +42,8 @@ class Bat_EV_SDL_V2 extends IPSModule
     {
         parent::ApplyChanges();
 
-        $intervalMin = (int)$this->ReadPropertyInteger("UpdateInterval");
-        $this->SetTimerInterval("UpdateTimer", ($intervalMin > 0) ? $intervalMin * 60 * 1000 : 0);
+        $intervalSec = (int)$this->ReadPropertyInteger("UpdateInterval");
+        $this->SetTimerInterval("UpdateTimer", ($intervalSec > 0) ? $intervalSec * 1000 : 0);
 
         // Cache neu bauen (force)
         $this->BuildBatteryCache(true);