diff --git a/Bat_EV_SDL_V4/form.json b/Bat_EV_SDL_V4/form.json
index ac9bea5..aef7d56 100644
--- a/Bat_EV_SDL_V4/form.json
+++ b/Bat_EV_SDL_V4/form.json
@@ -96,9 +96,9 @@
       "type": "NumberSpinner",
       "name": "UpdateIntervalMs",
       "caption": "Neuberechnung alle",
-      "suffix": "ms",
-      "minimum": 100,
-      "maximum": 86400000
+      "suffix": "S",
+      "minimum": 1,
+      "maximum": 86400
     },
     {
       "type": "CheckBox",
diff --git a/Bat_EV_SDL_V4/module.php b/Bat_EV_SDL_V4/module.php
index 51be881..42c2620 100644
--- a/Bat_EV_SDL_V4/module.php
+++ b/Bat_EV_SDL_V4/module.php
@@ -9,7 +9,7 @@ class Bat_EV_SDL_V4 extends IPSModule
         $this->RegisterPropertyString("Batteries", "[]");
         $this->RegisterPropertyInteger("SDL_Leistung_Laden", 0);
         $this->RegisterPropertyInteger("SDL_Leistung_Entladen", 0);
-        $this->RegisterPropertyInteger("UpdateIntervalMs", 1000);
+        $this->RegisterPropertyInteger("UpdateIntervalMs", 2);
         $this->RegisterPropertyFloat("ReserveHours", 0.5);
         $this->RegisterPropertyBoolean("FilterAktiv", false);
 
@@ -46,8 +46,8 @@ class Bat_EV_SDL_V4 extends IPSModule
     {
         parent::ApplyChanges();
 
-        $intervalMs = (int)$this->ReadPropertyInteger("UpdateIntervalMs");
-        $this->SetTimerInterval("UpdateTimer", ($intervalMs > 0) ? $intervalMs : 0);
+        $intervalSec = (int)$this->ReadPropertyInteger("UpdateInterval");
+        $this->SetTimerInterval("UpdateTimer", ($intervalSec > 0) ? $intervalSec * 1000 : 0);
 
         $this->BuildStaticBatteryConfig();