diff --git a/README.md b/README.md
index 5868590..ab94fb0 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ Within the project there is a file `/data/dbus-shelly-1pm-pvinverter/config.ini`
 | DEFAULT  | CustomName | Name shown in Remote Console (e.g. name of pv inverter) |
 | DEFAULT  | Phase | Valid values L1, L2 or L3: represents the phase where pv inverter is feeding in |
 | DEFAULT  | Position | Valid values 0, 1 or 2: represents where the inverter is connected (0=AC input 1; 1=AC output; 2=AC input 2) |
+| DEFAULT  | RefreshRate | Valid values are above 250: Refresh rate for timer in ms |
 | ONPREMISE  | Host | IP or hostname of on-premise Shelly 3EM web-interface |
 | ONPREMISE  | Username | Username for htaccess login - leave blank if no username/password required |
 | ONPREMISE  | Password | Password for htaccess login - leave blank if no username/password required |
diff --git a/config.ini b/config.ini
index a3f958c..21a9446 100644
--- a/config.ini
+++ b/config.ini
@@ -5,6 +5,7 @@ Deviceinstance=41
 CustomName=SUN-2000_GTIL
 Phase=L3
 Position=1
+RefreshRate=2000
 
 [ONPREMISE]
 Host=192.168.178.146
diff --git a/dbus-shelly-1pm-pvinverter.py b/dbus-shelly-1pm-pvinverter.py
index 5e2b181..c5bfe91 100755
--- a/dbus-shelly-1pm-pvinverter.py
+++ b/dbus-shelly-1pm-pvinverter.py
@@ -61,7 +61,11 @@ def __init__(self, servicename, paths, productname='Shelly 1PM', connection='She
     self._lastUpdate = 0
 
     # add _update function 'timer'
-    gobject.timeout_add(250, self._update) # pause 250ms before the next request
+    refreshRate = int(config['DEFAULT']['RefreshRate'])
+    MIN_REFRESH_RATE = 250
+    if not refreshRate or refreshRate < MIN_REFRESH_RATE:
+        refreshRate = MIN_REFRESH_RATE
+    gobject.timeout_add(refreshRate, self._update) # pause at least 250ms before the next request
 
     # add _signOfLife 'timer' to get feedback in log every 5minutes
     gobject.timeout_add(self._getSignOfLifeInterval()*60*1000, self._signOfLife)