diff --git a/fhem/FHEM/10_CUL_HM.pm b/fhem/FHEM/10_CUL_HM.pm
index b7d53e37e..e35aa1ffc 100755
--- a/fhem/FHEM/10_CUL_HM.pm
+++ b/fhem/FHEM/10_CUL_HM.pm
@@ -288,8 +288,14 @@ sub CUL_HM_updateConfig($){
       $hash->{helper}{role}{vrt} = 1;
       if($hash->{helper}{role}{dev}){
         CUL_HM_UpdtCentral($name); # first update, then keys
-        if(eval "defined(&HMLAN_writeAesKey)"){
-          HMLAN_writeAesKey($_) foreach (split ",",AttrVal($name,"IOList",""));
+        foreach my $io (split ",",AttrVal($name,"IOList","")) {
+          next if(!$defs{$io});
+          if($defs{$io}->{TYPE} eq "HMLAN" && eval "defined(&HMLAN_writeAesKey)"){
+            HMLAN_writeAesKey($io);
+          } 
+          elsif ($defs{$io}->{TYPE} eq "HMUARTLGW") {
+            CallFn($io,"WriteFn",$defs{$io},undef,"writeAesKey:${io}");
+          }
         }
       }
     }
@@ -828,8 +834,14 @@ sub CUL_HM_Attr(@) {#################################
       delete $attr{$name}{$attrName};
     }
     if ($init_done){
-      if(eval "defined(&HMLAN_writeAesKey)"){
-        HMLAN_writeAesKey($_) foreach (split ",",AttrVal($name,"IOList",""));
+      foreach my $io (split ",",AttrVal($name,"IOList","")) {
+        next if(!$defs{$io});
+        if($defs{$io}->{TYPE} eq "HMLAN" && eval "defined(&HMLAN_writeAesKey)"){
+          HMLAN_writeAesKey($io);
+        }
+        elsif ($defs{$io}->{TYPE} eq "HMUARTLGW") {
+          CallFn($io,"WriteFn",$defs{$io},undef,"writeAesKey:${io}");
+        }
       }
     }
     return $retVal;
@@ -920,7 +932,7 @@ sub CUL_HM_hmInitMsgUpdt($){ #update device init msg for HMLAN
   if ((  $hash->{helper}{io}{newChn} ne $oldChn)
       && $hash->{IODev}
       && $hash->{IODev}->{TYPE}
-      && $hash->{IODev}->{TYPE} eq "HMLAN"){
+      && $hash->{IODev}->{TYPE} =~ m/^(HMLAN|HMUARTLGW)$/){
     IOWrite($hash, "", "init:$p[0]");
   }
 }
@@ -1924,11 +1936,9 @@ sub CUL_HM_Parse($$) {#########################################################
         }
       }
       my $pVal = $val;# necessary for oper 'off', not logical off
-      Log 1,"General $val-$lvlMin";
       $val = (($val-$lvlMin)<=0)
                   ? ($val?1:0)
                   : int((($val-$lvlMin)*200)/($lvlMax - $lvlMin))/2;
-      Log 1,"General $val-$lvlMin";
 
       # blind option: reverse Level Meaning 0 = open, 100 = closed
       if (AttrVal($mh{cName}, "param", "") =~ m/levelInverse/){;
@@ -2795,7 +2805,7 @@ sub CUL_HM_parseCommon(@){#####################################################
   }
   if($rxt & 0x10 && $mhp->{devH}{helper}{prt}{sleeping}){ # lazy config
     if($mhp->{mFlgH} & 0x02                  #wakeup device
-       && $defs{$mhp->{devH}{IODev}{NAME}}{TYPE} eq "HMLAN"){
+       && $defs{$mhp->{devH}{IODev}{NAME}}{TYPE} =~ m/^(HMLAN|HMUARTLGW)$/){
       $mhp->{devH}{helper}{io}{newCh} = 1 if ($mhp->{devH}{helper}{prt}{sProc} == 2);
       CUL_HM_appFromQ($mhp->{devN},"cf");# stack cmds if waiting
       $mhp->{devH}{helper}{prt}{sleeping} = 0;
@@ -4298,8 +4308,7 @@ sub CUL_HM_Set($@) {#+++++++++++++++++ set command+++++++++++++++++++++++++++++
       my $curVal = CUL_HM_getRegFromStore($rName,$addr,$list,$peerId.$peerChn);
       if ($curVal !~ m/^(set_|)(\d+)$/){
 	    return "peer required for $regName" if ($curVal =~ m/peer/);
-        return "cannot calculate value. Please issue set $name getConfig first - $curVal"
-              if ($curVal !~ m/^(set_|)(\d+)$/);
+        return "cannot calculate value. Please issue set $name getConfig first - $curVal";
       }
       $curVal = $2; # we expect one byte in int, strap 'set_' possibly
       $data = ($curVal & (~($mask<<$bit)))|($data<<$bit);
@@ -7289,19 +7298,20 @@ sub CUL_HM_getRegFromStore($$$$@) {#read a register from backup data
   for (my $size2go = $size;$size2go>0;$size2go -=8){
     my $addrS = sprintf("%02X",$addr);
     my ($dReadS,$dReadR) = (undef,"");  
-    $dReadS = $1 if( $sRL =~ m/$addrS:(..)/);
-    $dReadR = $1 if( $rRL =~ m/$addrS:(..)/);
+    $dReadS = $1 if( $sRL =~ m/$addrS:(..)/);#shadowReg
+    $dReadR = $1 if( $rRL =~ m/$addrS:(..)/);#realReg
     my $dRead = $dReadR;
     if (defined $dReadS){
       $convFlg = "set_" if ($dReadR ne $dReadS);
       $dRead = $dReadS;
     }
     else{
-      if (grep /$regLN../,keys %{$hash->{READINGS}} &&
-           !$peerId){
-        return "invalid:peer missing";
+      return "invalid:peer missing"  if (grep /$regLN../,keys %{$hash->{READINGS}} &&
+                                         !$peerId);
+      if (!defined($dRead) || $dRead eq ""){
+        return "invalid: not supported by FW version" if ($rRL =~ m/00:00/);#reglist is complete but still address cannot be found
+        return "invalid";
       }
-      return "invalid" if (!defined($dRead) || $dRead eq "");
     }
 
     $data = ($data<< 8)+hex($dRead);
@@ -8287,7 +8297,7 @@ sub CUL_HM_UpdtCentral($){
   
   foreach my $ioN(split",",AttrVal($name,"IOList","")){# set parameter in IO
     next if (!$defs{$ioN});
-    if (  $defs{$ioN}{TYPE} eq "HMLAN"){;
+    if (  $defs{$ioN}{TYPE} =~ m/^(HMLAN|HMUARTLGW)$/){;
     }
     elsif($defs{$ioN}{TYPE} eq "CUL"){
       CommandAttr(undef, "$ioN rfmode HomeMatic") 
@@ -8383,7 +8393,7 @@ sub CUL_HM_assignIO($){ #check and assign IO
       if (   $hash->{IODev} 
           && $hash->{IODev} ne $defs{$iom}
           && $hash->{IODev}->{TYPE}
-          && $hash->{IODev}->{TYPE} eq "HMLAN"){#if recent io is HMLAN and we have to remove the device from IO
+          && $hash->{IODev}->{TYPE} =~ m/^(HMLAN|HMUARTLGW)$/){#if recent io is HMLAN and we have to remove the device from IO
         IOWrite($hash, "", "remove:".CUL_HM_hash2Id($hash));
       }
       $hash->{IODev} = $defs{$iom};
diff --git a/fhem/FHEM/HMConfig.pm b/fhem/FHEM/HMConfig.pm
index 1b72c84c1..ee64b6ed3 100644
--- a/fhem/FHEM/HMConfig.pm
+++ b/fhem/FHEM/HMConfig.pm
@@ -251,7 +251,7 @@ my $K_actDetID = '000000'; # id of actionDetector
  ,"00B9" => {name=>"HM-LC-Dim1T-CV-2"        ,st=>'dimmer'            ,cyc=>''      ,rxt=>''       ,lst=>'1,3'          ,chn=>"Sw:1:1,Sw1_V:2:3",}
  ,"00BA" => {name=>"HM-LC-Dim1T-FM-2"        ,st=>'dimmer'            ,cyc=>''      ,rxt=>''       ,lst=>'1,3'          ,chn=>"Sw:1:1,Sw1_V:2:3",}
  ,"00BB" => {name=>"HM-LC-Dim2T-SM-2"        ,st=>'dimmer'            ,cyc=>''      ,rxt=>''       ,lst=>'1,3'          ,chn=>"Sw:1:2,Sw1_V:3:4,Sw2_V:5:6",}#
- ,"00BC" => {name=>"HM-WDS40-TH-I-2"         ,st=>'THSensor'          ,cyc=>'00:10' ,rxt=>'c:f'    ,lst=>'p'            ,chn=>"",}, #:w  todo should be wakeup, does not react
+ ,"00BC" => {name=>"HM-WDS40-TH-I-2"         ,st=>'THSensor'          ,cyc=>'00:10' ,rxt=>'c:f'    ,lst=>'p'            ,chn=>"",} #:w  todo should be wakeup, does not react
  ,"00BD" => {name=>"HM-CC-RT-DN-BoM"         ,alias=>"HM-CC-RT-DN"}
  ,"00BE" => {name=>"HM-MOD-Re-8"             ,st=>'switch'            ,cyc=>''      ,rxt=>'b'      ,lst=>'1,3'          ,chn=>"Sw:1:8",}
  ,"00BF" => {name=>"HM-PB-2-FM"              ,st=>'pushButton'        ,cyc=>''      ,rxt=>'c:l'    ,lst=>'1,4'          ,chn=>"Btn:1:2",}
@@ -846,16 +846,14 @@ foreach my $al (keys %culHmModel){ # duplicate entries for alias devices
 #'powerMeter'
 
 %culHmRegGeneral = (
-  pairCentral=>1,
+  pairCentral     =>1
+ ,sign            =>1
 );
 %culHmRegType = (
   swi                 =>{ peerNeedsBurst  =>1,expectAES       =>1}
- ,remote              =>{ peerNeedsBurst  =>1,expectAES       =>1,dblPress        =>1,longPress       =>1
-                         ,sign            =>1
-                        }
+ ,remote              =>{ peerNeedsBurst  =>1,expectAES       =>1,dblPress        =>1,longPress       =>1}
  ,blindActuator       =>{ intKeyVisib     =>1
                          ,driveUp         =>1,driveDown       =>1,driveTurn       =>1,refRunCounter   =>1
-                         ,sign            =>1
                          ,confBtnTime     =>1,localResDis     =>1
                          ,transmitTryMax  =>1,statusInfoMinDly=>1,statusInfoRandom=>1
                          ,MaxTimeF        =>1
@@ -885,7 +883,7 @@ foreach my $al (keys %culHmModel){ # duplicate entries for alias devices
                          ,OffDlyStep      =>1,OffDlyNewTime   =>1,OffDlyOldTime   =>1
                          ,lgMultiExec     =>1,shMultiExec     =>1
                         }
- ,switch              =>{ intKeyVisib     =>1,sign            =>1
+ ,switch              =>{ intKeyVisib     =>1,
                          ,OnTime          =>1,OffTime         =>1,OnDly           =>1,OffDly          =>1
                          ,SwJtOn          =>1,SwJtOff         =>1,SwJtDlyOn       =>1,SwJtDlyOff      =>1
                          ,CtValLo         =>1,CtValHi         =>1
@@ -911,16 +909,14 @@ foreach my $al (keys %culHmModel){ # duplicate entries for alias devices
 ###motionAndBtn#########################
  ,threeStateSensor    =>{ cyclicInfoMsg   =>1,                    transmDevTryMax =>1
                          ,                                        transmitTryMax  =>1
-                         ,sign            =>1
                          ,peerNeedsBurst  =>1,expectAES       =>1
                          }
  ,sensRain            =>{ transmDevTryMax =>1,localResDis     =>1}
  ,tipTronic           =>{ cyclicInfoMsg   =>1,cyclicInfoMsgDis=>1,localResDis     =>1,RS485IdleTime   =>1}
  ,senBright           =>{ cyclicInfoMsgDis=>1,localResDis     =>1,transmDevTryMax =>1}
  ,powerMeter          =>{ intKeyVisib     =>1,localResDis     =>1
-                         ,sign            =>1
                          ,transmitTryMax  =>1,statusInfoMinDly=>1,statusInfoRandom=>1}
- ,outputUnit          =>{ intKeyVisib     =>1,sign            =>1}
+ ,outputUnit          =>{ intKeyVisib     =>1}
  ,powerSensor         =>{ transmitTryMax  =>1,transmDevTryMax =>1
                          ,mtrType         =>1,mtrConstIr      =>1,mtrConstGas     =>1,mtrConstLed     =>1  
                          ,mtrSensIr       =>1  
@@ -952,7 +948,7 @@ $culHmRegType{pushButton}     = $culHmRegType{remote};
  ,"HM-RC-19"          =>{ backAtKey       =>1, backAtMotion   =>1, backOnTime     =>1,backAtCharge    =>1,language =>1}
  ,"HM-RC-4-2"         =>{ localResDis     =>1}
 
- ,"HM-LC-Dim1L-Pl"    =>{ confBtnTime     =>1,loadAppearBehav =>1,loadErrCalib     =>1},
+ ,"HM-LC-Dim1L-Pl"    =>{ confBtnTime     =>1,loadAppearBehav =>1,loadErrCalib     =>1}
  ,"HM-LC-Dim1L-CV-2"  =>{ confBtnTime     =>1,loadAppearBehav =>1,loadErrCalib     =>1
                          ,logicCombination=>1
                          ,DimElsOffTimeMd =>1,DimElsOnTimeMd  =>1
@@ -992,7 +988,6 @@ $culHmRegType{pushButton}     = $culHmRegType{remote};
  ,"HM-CC-RT-DN"       =>{ btnLock         =>1,localResDis     =>1,globalBtnLock   =>1,modusBtnLock    =>1
                          ,cyclicInfoMsg   =>1,cyclicInfoMsgDis=>1
                          ,burstRx         =>1,lowBatLimitRT   =>1,backOnTime      =>1
-                         ,sign            =>1
                         }
  ,"HM-MOD-Em-8"       =>{ lowBatLimitBA2  =>1,transmDevTryMax =>1,localResDis     =>1  
                          ,ledMode         =>1
@@ -1061,9 +1056,7 @@ $culHmRegType{pushButton}     = $culHmRegType{remote};
  ,"HM-LC-SW1-BA-PCB"  =>{ lowBatLimitBA   =>1,ledMode         =>1}
  ,"HM-LC-SW4-BA-PCB"  =>{ lowBatLimitBA   =>1,ledMode         =>1,localResDis     =>1}
  ,"HM-Sen-DB-PCB"     =>{                     ledMode         =>1}
- ,"HM-MOD-Re-8"       =>{ lowBatLimitBA3  =>1,ledMode         =>1
-                         ,sign            =>1
-                        },
+ ,"HM-MOD-Re-8"       =>{ lowBatLimitBA3  =>1,ledMode         =>1}
  ,"HM-Sys-sRP-Pl"     =>{ compMode        =>1}
  ,"KFM-Display"       =>{ CtDlyOn         =>1,CtDlyOff        =>1
                          ,CtOn            =>1,CtOff           =>1,CtRampOn        =>1,CtRampOff       =>1
@@ -1085,8 +1078,7 @@ $culHmRegType{pushButton}     = $culHmRegType{remote};
  ,"HM-WDS30-OT2-SM"   =>{ burstRx         =>1,cyclicInfoMsgDis=>1,localResDis     =>1,paramSel        =>1}
  ,"HM-TC-IT-WM-W-EU"  =>{ burstRx         =>1,cyclicInfoMsgDis=>1,localResDis     =>1,cyclicInfoMsg   =>1
                          ,btnLock         =>1,globalBtnLock   =>1,modusBtnLock    =>1,lowBatLimitRT   =>1
-                         ,sign            =>1
-                        },
+                        }
  ,"HM-SEN-EP"         =>{ seqPulse1       =>1,seqPulse2       =>1,seqPulse3       =>1,seqPulse4       =>1
                          ,seqPulse5       =>1,seqTolerance    =>1
                          ,peerNeedsBurst  =>1
@@ -1272,7 +1264,6 @@ $culHmRegModel{"ROTO_ZEL-STG-RM-DWT-10"}= $culHmRegModel{"HM-PB-4DIS-WM"};
                           }
  ,"HM-Sen-MDIR-WM5500"=>{ intKeyVisib     =>1,cyclicInfoMsg   =>1,localResDis     =>1,transmDevTryMax =>1}
  ,"HM-Sen-MDIR-WM5501"=>{ peerNeedsBurst  =>1,expectAES       =>1,dblPress        =>1,longPress       =>1
-                         ,sign            =>1
                          ,ledOnTime       =>1,transmitTryMax  =>1,localResDis     =>1
                         }
  ,"HM-LC-RGBW-WM01"   =>{ OnDly           =>1,OnTime          =>1,OffDly          =>1,OffTime         =>1
@@ -1517,7 +1508,7 @@ $culHmRegChan{"HM-OU-CFM-TW02"}= $culHmRegChan{"HM-OU-CFM-PL02"};
                     cmdList    => "",
 );
 %culHmSubTypeGets = (
-                    none4Type  =>{ "test"=>"" },
+                    none4Type  =>{ "test"=>"" }
 );
 %culHmModelGets = (
                     "CCU-FHEM"     =>{ "listDevice"=>""}