diff --git a/CHANGELOG.md b/CHANGELOG.md
index 422ef07..6a847f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,12 +1,5 @@
 # Changelog
 
-## V1.92
-### script
-* support DDSU666 Smartmeter Module (Modbus)
-### config
-* add section `DDSU666`
-* add `SELECT_POWERMETER`: `USE_DDSU666`
-
 ## V1.91
 ### script
 * support Home Assistant over HTTPS (https://github.com/reserve85/HoymilesZeroExport/issues/178)
diff --git a/HoymilesZeroExport.py b/HoymilesZeroExport.py
index 63cfa96..4e47f29 100644
--- a/HoymilesZeroExport.py
+++ b/HoymilesZeroExport.py
@@ -15,7 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 __author__ = "Tobias Kraft"
-__version__ = "1.92"
+__version__ = "1.91"
 
 import requests
 import time
@@ -1117,16 +1117,6 @@ def __init__(self, file: str, ip: str, user: str, password: str):
     def GetPowermeterWatts(self):
         power = subprocess.check_output([self.file, self.ip, self.user, self.password])
         return CastToInt(power)
-    
-class DDSU666(Powermeter):
-    def __init__(self, device_address: str):
-        self.file = 'GetPowerFromDDSU666.py'
-        self.device_address = device_address
-
-    def GetPowermeterWatts(self):
-        import GetPowerFromDDSU666
-        power = GetPowerFromDDSU666.GetPower(int(self.device_address))
-        return CastToInt(power)
 
 
 def CreatePowermeter() -> Powermeter:
@@ -1197,10 +1187,6 @@ def CreatePowermeter() -> Powermeter:
             config.get('SCRIPT', 'SCRIPT_USER'),
             config.get('SCRIPT', 'SCRIPT_PASS')
         )
-    elif config.getboolean('SELECT_POWERMETER', 'USE_DDSU666'):
-        return DDSU666(
-            config.get('DDSU666', 'DEVICE_ADDRESS')
-        )
     else:
         raise Exception("Error: no powermeter defined!")
 
diff --git a/HoymilesZeroExport_Config.ini b/HoymilesZeroExport_Config.ini
index cbb7ac0..0cf81a1 100644
--- a/HoymilesZeroExport_Config.ini
+++ b/HoymilesZeroExport_Config.ini
@@ -19,7 +19,7 @@
 # ---------------------------------------------------------------------
 
 [VERSION]
-VERSION = 1.92
+VERSION = 1.91
 
 [SELECT_DTU]
 # --- define your DTU (only one) ---
@@ -38,7 +38,6 @@ USE_IOBROKER = false
 USE_HOMEASSISTANT = false
 USE_VZLOGGER = false
 USE_SCRIPT = false
-USE_DDSU666 = false
 
 [AHOY_DTU]
 # --- defines for AHOY-DTU ---
@@ -137,10 +136,6 @@ SCRIPT_FILE = GetPowerFromVictronMultiplus.sh
 SCRIPT_USER =
 SCRIPT_PASS =
 
-[DDSU666]
-# --- defines for DDSU666 Smartmeter Modul, you need to install pymodbus ("pip install pymodbus") ---
-DEVICE_ADDRESS = 1
-
 [SELECT_INTERMEDIATE_METER]
 # if you have an intermediate meter ("Zwischenzähler") to measure the outputpower of your inverter you can set it here. It is faster than the DTU current_power value
 # --- define your intermediate meter - if you don´t have one set the following defines to false to use the value from your DTU---