diff --git a/fhem/FHEM/77_SMAEM.pm b/fhem/FHEM/77_SMAEM.pm
index 1a462a7f2..901a6c7a0 100644
--- a/fhem/FHEM/77_SMAEM.pm
+++ b/fhem/FHEM/77_SMAEM.pm
@@ -36,6 +36,7 @@ eval "use FHEM::Meta;1" or my $modMetaAbsent = 1;
 
 # Versions History by DS_Starter 
 our %SMAEM_vNotesIntern = (
+  "4.3.1" => "28.10.2021  Support for  Softwareversion 2.07.5.R",
   "4.3.0" => "06.12.2020  attribute serialNumber may contain multiple serial numbers, extend logging with serial number ",
   "4.2.0" => "14.04.2020  delete 'use bignum' ",
   "4.1.0" => "17.03.2020  add define option <interface> ",
@@ -380,6 +381,10 @@ sub SMAEM_Read {
   $socket->recv($data, 656);
   my $dl = length($data);
   
+  if(substr(unpack('H*', $data), 32, 4) ne "6069") {
+      return;
+  }
+  
   if($dl == 600) {                                                  # Each SMAEM packet is 600 bytes of packed payload
       $model = "EM / HM 2.0 < 2.03.4.R";
   } 
@@ -1409,4 +1414,3 @@ return;
 =end :application/json;q=META.json
 
 =cut
-