diff --git a/fhem/contrib/1-Wire/00_OWX.pm b/fhem/contrib/1-Wire/00_OWX.pm
index 8d9705467..0e84393cd 100644
--- a/fhem/contrib/1-Wire/00_OWX.pm
+++ b/fhem/contrib/1-Wire/00_OWX.pm
@@ -9,7 +9,7 @@
 # Internally these interfaces are vastly different, read the corresponding Wiki pages 
 # http://fhemwiki.de/wiki/Interfaces_f%C3%BCr_1-Wire
 #
-# Version 2.11 - July, 2012
+# Version 2.13 - July, 2012
 #
 # Prof. Dr. Peter A. Henning, 2012
 #
@@ -595,8 +595,11 @@ sub OWX_Discover ($) {
         my $name = sprintf "OWX_%s_%s",$owx_f,$owx_rnf;
         #-- Family 10 = Temperature sensor, assume DS1820 as default
         if( $owx_f eq "10" ){
-          CommandDefine(undef,"$name OWTHERM DS1820 $owx_rnf");    
-           #-- Family 1D = Counter/RAM, assume DS2423 as default
+          CommandDefine(undef,"$name OWTHERM DS1820 $owx_rnf");  
+        #-- Family 12 = Switch, assume DS2406 as default
+        }elsif( $owx_f eq "12" ){
+          CommandDefine(undef,"$name OWSWITCH DS2406 $owx_rnf");     
+        #-- Family 1D = Counter/RAM, assume DS2423 as default
         }elsif( $owx_f eq "1D" ){
           CommandDefine(undef,"$name OWCOUNT DS2423 $owx_rnf");            
         #-- Family 20 = A/D converter, assume DS2450 as default
@@ -608,7 +611,7 @@ sub OWX_Discover ($) {
         #-- Family 28 = Temperature sensor, assume DS18B20 as default
         }elsif( $owx_f eq "28" ){
           CommandDefine(undef,"$name OWTHERM DS18B20 $owx_rnf");   
-            #-- Family 3A = Switch, assume DS2413 as default
+        #-- Family 3A = Switch, assume DS2413 as default
         }elsif( $owx_f eq "3A" ){
           CommandDefine(undef,"$name OWSWITCH DS2413 $owx_rnf");   
         #-- Family FF = LCD display    
diff --git a/fhem/contrib/1-Wire/21_OWAD.pm b/fhem/contrib/1-Wire/21_OWAD.pm
index 8fef59490..3736c2d22 100644
--- a/fhem/contrib/1-Wire/21_OWAD.pm
+++ b/fhem/contrib/1-Wire/21_OWAD.pm
@@ -14,7 +14,7 @@
 #
 # Prof. Dr. Peter A. Henning, 2012
 # 
-# Version 2.11 - July, 2012
+# Version 2.13 - July, 2012
 #   
 # Setup bus device in fhem.cfg as
 #
diff --git a/fhem/contrib/1-Wire/21_OWCOUNT.pm b/fhem/contrib/1-Wire/21_OWCOUNT.pm
index 1dfa7bbad..0f0e3686f 100644
--- a/fhem/contrib/1-Wire/21_OWCOUNT.pm
+++ b/fhem/contrib/1-Wire/21_OWCOUNT.pm
@@ -14,7 +14,7 @@
 #
 # Prof. Dr. Peter A. Henning, 2012
 # 
-# Version 2.11 - July, 2012
+# Version 2.13 - July, 2012
 #   
 # Setup bus device in fhem.cfg as
 #
diff --git a/fhem/contrib/1-Wire/21_OWID.pm b/fhem/contrib/1-Wire/21_OWID.pm
index a10c4a592..56b88caa6 100644
--- a/fhem/contrib/1-Wire/21_OWID.pm
+++ b/fhem/contrib/1-Wire/21_OWID.pm
@@ -12,7 +12,7 @@
 #
 # Prof. Dr. Peter A. Henning, 2012
 # 
-# Version 2.11 - July, 2012
+# Version 2.13 - July, 2012
 #   
 # Setup bus device in fhem.cfg as
 #
diff --git a/fhem/contrib/1-Wire/21_OWLCD.pm b/fhem/contrib/1-Wire/21_OWLCD.pm
index 8272c7c21..0b7534df8 100644
--- a/fhem/contrib/1-Wire/21_OWLCD.pm
+++ b/fhem/contrib/1-Wire/21_OWLCD.pm
@@ -12,7 +12,7 @@
 #
 # Prof. Dr. Peter A. Henning, 2012
 # 
-# Version 2.1 - July, 2012
+# Version 2.13 - July, 2012
 #   
 # Setup bus device in fhem.cfg as
 #
diff --git a/fhem/contrib/1-Wire/21_OWSWITCH.pm b/fhem/contrib/1-Wire/21_OWSWITCH.pm
index 5d34e9b14..8bd49ccd9 100644
--- a/fhem/contrib/1-Wire/21_OWSWITCH.pm
+++ b/fhem/contrib/1-Wire/21_OWSWITCH.pm
@@ -2,7 +2,7 @@
 #
 # OWSWITCH.pm
 #
-# FHEM module to commmunicate with 1-Wire adressable switches DS2413
+# FHEM module to commmunicate with 1-Wire adressable switches DS2413, DS206
 #
 # Attention: This module may communicate with the OWX module,
 #            but currently not with the 1-Wire File System OWFS
@@ -17,7 +17,7 @@
 #
 # Prof. Dr. Peter A. Henning, 2012
 # 
-# Version 2.11 - July, 2012
+# Version 2.13 - July, 2012
 #   
 # Setup bus device in fhem.cfg as
 #
@@ -26,7 +26,7 @@
 # where <name> may be replaced by any name string 
 #     
 #       <model> is a 1-Wire device type. If omitted, we assume this to be an
-#              DS2413  
+#              DS2413. Allowed values are DS2413, DS2406 
 #       <ROM_ID> is a 12 character (6 byte) 1-Wire ROM ID 
 #                without Family ID, e.g. A2D90D000800 
 #       [interval] is an optional query interval in seconds
@@ -35,10 +35,15 @@
 # get <name> present  => 1 if device present, 0 if not
 # get <name> interval => query interval
 # get <name> input <channel-name> => state for channel (name A, B or defined channel name)
+#            note: this value reflects the measured value, not necessarily the one set as
+#            output state, because the output transistors are open collector switches. A measured
+#            state of 1 = OFF therefore corresponds to an output state of 1 = OFF, but a measured
+#            state of 0 = ON can also be due to an external shortening of th eoutput.
 # get <name> gpio  => values for channels
 #
 # set <name> interval => set period for measurement
 # set <name> output <channel-name>  ON|OFF => set value for channel (name A, B or defined channel name)
+#            note: 1 = OFF, 0 = ON in normal usage. See also th enote above
 # set <name> gpio  value => set values for channels (3 = both OFF, 1 = B ON 2 = A ON 0 = both ON)
 #
 # Additional attributes are defined in fhem.cfg, in some cases per channel, where <channel>=A,B
@@ -46,6 +51,7 @@
 #
 # attr <name> <channel>Name <string>|<string> = name for the channel | a type description for the measured value
 # attr <name> <channel>Unit <string>|<string> = values to display in state variable for on|off condition
+# attr <name> <channel>stateS <string> = character string denoting external shortening condition
 #
 ########################################################################################
 #
@@ -76,8 +82,9 @@ sub Log($$);
 #-- channel name - fixed is the first array, variable the second 
 my @owg_fixed = ("A","B");
 my @owg_channel;
-#-- channel values - always the raw values from the device
+#-- channel values - always the raw input resp. output values from the device
 my @owg_val;
+my @owg_vax;
 
 my %gets = (
   "id"          => "",
@@ -124,11 +131,12 @@ sub OWSWITCH_Initialize ($) {
   #Offset      = an offset added to the reading
   #Factor      = a factor multiplied with (reading+offset)  
   #Unit        = a unit of measure
-  my $attlist = "IODev do_not_notify:0,1 showtime:0,1 model:DS2413 loglevel:0,1,2,3,4,5 ";
+  my $attlist = "IODev do_not_notify:0,1 showtime:0,1 model:DS2413,DS2406 loglevel:0,1,2,3,4,5 ";
  
   for( my $i=0;$i<int(@owg_fixed);$i++ ){
     $attlist .= " ".$owg_fixed[$i]."Name";
     $attlist .= " ".$owg_fixed[$i]."Unit";
+    $attlist .= " ".$owg_fixed[$i]."stateS";
   }
   $hash->{AttrList} = $attlist; 
 }
@@ -169,21 +177,30 @@ sub OWSWITCH_Define ($$) {
     if(int(@a)>=4) { $interval = $a[3]; }
   } elsif(  $a3 =~ m/^[0-9|a-f|A-F]{12}$/ ) {
     $model         = $a[2];
-    return "OWSWITCH: Wrong 1-Wire device model $model"
-      if( $model ne "DS2413");
     $id            = $a[3];
+    if(int(@a)>=5) { $interval = $a[4]; }
   } else {    
     return "OWSWITCH: $a[0] ID $a[2] invalid, specify a 12 digit value";
   }
+    #-- 1-Wire ROM identifier in the form "FF.XXXXXXXXXXXX.YY"
+  #   FF = family id follows from the model
+  #   YY must be determined from id
+  if( $model eq "DS2413" ){
+    $fam = "3A";
+  }elsif( $model eq "DS2406" ){
+    $fam = "12";
+  }else{
+    return "OWSWITCH: Wrong 1-Wire device model $model";
+  }
   
   #-- 1-Wire ROM identifier in the form "FF.XXXXXXXXXXXX.YY"
   #   determine CRC Code - only if this is a direct interface
-  $crc = defined($hash->{IODev}->{INTERFACE}) ?  sprintf("%02x",OWX_CRC("3A.".$id."00")) : "00";
+  $crc = defined($hash->{IODev}->{INTERFACE}) ?  sprintf("%02x",OWX_CRC($fam.".".$id."00")) : "00";
   
   #-- Define device internals
-  $hash->{ROM_ID}     = "3A.".$id.$crc;
+  $hash->{ROM_ID}     = $fam.".".$id.$crc;
   $hash->{OW_ID}      = $id;
-  $hash->{OW_FAMILY}  = "3A";
+  $hash->{OW_FAMILY}  = $fam;
   $hash->{PRESENT}    = 0;
   $hash->{INTERVAL}   = $interval;
   
@@ -219,12 +236,12 @@ sub OWSWITCH_InitializeDevice($) {
   my ($hash) = @_;
   
   my $name   = $hash->{NAME};
-    
-  #-- Initial readings 
-  @owg_val   = (0.0,0.0,0.0,0.0);
    
   #-- Set channel names, channel units 
   for( my $i=0;$i<int(@owg_fixed);$i++) { 
+    #-- Initial readings OFF
+    $owg_val[$i]   = 1;
+    $owg_vax[$i]   = 1;
     #-- name
     my $cname = defined($attr{$name}{$owg_fixed[$i]."Name"})  ? $attr{$name}{$owg_fixed[$i]."Name"} : $owg_fixed[$i]."|onoff";
     my @cnama = split(/\|/,$cname);
@@ -279,28 +296,35 @@ sub OWSWITCH_FormatValues($) {
   my ($hash) = @_;
   
   my $name    = $hash->{NAME}; 
-  my ($offset,$factor,$vval);
+  my ($offset,$factor,$vval,$vvax,$vstr,$cname,@cnama,@unarr);
   my ($value1,$value2,$value3)   = ("","","");
 
   my $tn = TimeNow();
   
   #-- formats for output
   for (my $i=0;$i<int(@owg_fixed);$i++){
-    my $cname = defined($attr{$name}{$owg_fixed[$i]."Name"})  ? $attr{$name}{$owg_fixed[$i]."Name"} : $owg_fixed[$i];  
-    my @cnama = split(/\|/,$cname);
+    $cname = defined($attr{$name}{$owg_fixed[$i]."Name"})  ? $attr{$name}{$owg_fixed[$i]."Name"} : $owg_fixed[$i];  
+    @cnama = split(/\|/,$cname);
     $owg_channel[$i]=$cnama[0];
     
-    #-- result is zero or one
+    #-- input state is 0 = ON or 1 = OFF
     $vval    = $owg_val[$i];
-  
+    #-- output state is 0 = ON or 1 = OFF
+    $vvax    = $owg_vax[$i];
+ 
     #-- string buildup for return value and STATE
-    my @unarr=split(/\|/,$hash->{READINGS}{"$owg_channel[$i]"}{UNIT});
-    $value1 .= sprintf( "%s: %s", $owg_channel[$i], $unarr[$vval]);
-    $value2 .= sprintf( "%s: %s ", $owg_channel[$i], $unarr[$vval]);
+    @unarr= split(/\|/,$hash->{READINGS}{"$owg_channel[$i]"}{UNIT});
+    $cname = defined($attr{$name}{$owg_fixed[$i]."stateS"})  ? $attr{$name}{$owg_fixed[$i]."stateS"} : "<span style=\"color:red\">&#x2607;</span>";  
+    $vstr    = $unarr[$vval];
+    $vstr   .= $cname if( ($vval == 0) && ($vvax == 1) );
+    $vstr    = "ERR"  if( ($vval == 1) && ($vvax == 0) );
+    
+    $value1 .= sprintf( "%s: %s", $owg_channel[$i], $vstr);
+    $value2 .= sprintf( "%s: %s ", $owg_channel[$i], $vstr);
     $value3 .= sprintf( "%s: " , $owg_channel[$i]);
     
     #-- put into READINGS
-    $hash->{READINGS}{"$owg_channel[$i]"}{VAL}   = $unarr[$vval];
+    $hash->{READINGS}{"$owg_channel[$i]"}{VAL}   = $vstr;
     $hash->{READINGS}{"$owg_channel[$i]"}{TIME}  = $tn;
     
     #-- insert comma
@@ -457,7 +481,7 @@ sub OWSWITCH_GetValues($) {
   if( $interface eq "OWX" ){
     $ret = OWXSWITCH_GetState($hash);
   #}elsif( $interface eq "OWFS" ){
-  #  $ret = OWFSAD_GetValues($hash);
+  #  $ret = OWFSSWITCH_GetValues($hash);
   }else{
     return "OWSWITCH: GetValues with wrong IODev type $interface";
   }
@@ -546,7 +570,7 @@ sub OWSWITCH_Set($@) {
     }elsif( lc($a[3]) eq "off" ){
       $nval = 1;
     }else{
-      return "OWSWITCH: Wrong data value $a[3]";
+      return "OWSWITCH: Wrong data value $a[3], must be ON or OFF";
     }
 
     #-- OWX interface
@@ -645,48 +669,66 @@ sub OWXSWITCH_GetState($) {
   my $master = $hash->{IODev};
   
   my ($i,$j,$k);
-
-  #-- 8 byte 1-Wire device address
-  my @owx_ROM_ID  =(0,0,0,0 ,0,0,0,0); 
-  #-- from search string to byte id
-  my $devs=$owx_dev;
-  $devs=~s/\.//g;
-  for($i=0;$i<8;$i++){
-     $owx_ROM_ID[$i]=hex(substr($devs,2*$i,2));
+  
+  #-- family = 3A => DS2413
+  if( $hash->{OW_FAMILY} eq "3A" ) {
+    #=============== get gpio values ===============================
+    #-- issue the match ROM command \x55 and the read gpio command
+    #   \xF5 plus 2 empty bytes
+    #-- reset the bus
+    OWX_Reset($master);
+    #-- read the data
+    $res=OWX_Complex($master,$owx_dev,"\xF5",2);
+    if( $res eq 0 ){
+      return "OWXSWITCH: Device $owx_dev not accessible in reading"; 
+    }
+  #-- family = 12 => DS2406
+  }elsif( $hash->{OW_FAMILY} eq "12" ) {
+    #=============== set gpio values ===============================
+    #-- issue the match ROM command \x55 and the access channel command
+    #   \xF5 plus the two byte channel control and the value
+    $select=sprintf("\xF5\xDC\xFF");   
+    #-- reset the bus
+    OWX_Reset($master);
+    #-- read the data
+    $res=OWX_Complex($master,$owx_dev,$select,1);
+    if( $res eq 0 ){
+      return "OWXSWITCH: Device $owx_dev not accessible in writing"; 
+    }
+  } else {
+    return "OWXSWITCH: Unknown device family $hash->{OW_FAMILY}\n";
   }
-
-  #=============== get gpio values ===============================
-  #-- issue the match ROM command \x55 and the read gpio command
-  #   \xF5 plus 2 empty bytes
-  #-- reset the bus
-  OWX_Reset($master);
-  #-- read the data
-  $res=OWX_Complex($master,$owx_dev,"\xF5",2);
-  if( $res eq 0 ){
-    return "OWX: Device $owx_dev not accessible in reading"; 
-  }
-
+  
   #-- process results
-  # TODO: could we put in a check if the two bytes are equal
   @data=split(//,substr($res,10));
   
   #-- reset the bus
   OWX_Reset($master);
   
   #my $ress = "OWXSWITCH_Get: three data bytes ";
-  #  for($i=0;$i<3;$i++){
+  #  for($i=0;$i<int(@data);$i++){
   #  my $j=int(ord($data[$i])/16);
   #  my $k=ord($data[$i])%16;
   #  $ress.=sprintf "0x%1x%1x ",$j,$k;
   #  }
   #Log 1, $ress;
   
-  #-- This holds only for DS2413 
-  $owg_val[0] = ord($data[0]) % 2;
-  $owg_val[1] = (ord($data[0])>>2) % 2;
-  
-  #Log 1, "Values are ".ord($data[0])." $owg_val[0] and $owg_val[1]";
-
+  #   note: value 1 corresponds to OFF, 0 to ON normally
+  #   note: we display the sensed output level, not the flipflop setting
+  #-- family = 3A => DS2413
+  if( $hash->{OW_FAMILY} eq "3A" ) {
+    $owg_val[0] = ord($data[0])      & 1;
+    $owg_vax[0] = (ord($data[0])>>1) & 1;
+    $owg_val[1] = (ord($data[0])>>2) & 1;
+    $owg_vax[1] = (ord($data[0])>>3) & 1;
+    
+  #-- family = 12 => DS2406
+  }elsif( $hash->{OW_FAMILY} eq "12" ) {
+    $owg_val[0] = (ord($data[2])>>2) & 1;
+    $owg_vax[0] =  ord($data[2])     & 1;
+    $owg_val[1] = (ord($data[2])>>3) & 1;
+    $owg_vax[1] = (ord($data[2])>>1) & 1;
+  }
   return undef
 }
 
@@ -716,18 +758,47 @@ sub OWXSWITCH_SetState($$) {
   
   my ($i,$j,$k);
   
-  #=============== set gpio values ===============================
-  #-- issue the match ROM command \x55 and the write gpio command
-  #   \x5A plus the value byte and its complement
-  $select=sprintf("\x5A%c%c",252+$value,3-$value);   
-  #-- reset the bus
-  OWX_Reset($master);
-  #-- read the data
-  $res=OWX_Complex($master,$owx_dev,$select,1);
-  if( $res eq 0 ){
-    return "OWX: Device $owx_dev not accessible in reading"; 
+  #-- family = 3A => DS2413
+  if( $hash->{OW_FAMILY} eq "3A" ) {
+    #=============== set gpio values ===============================
+    #-- issue the match ROM command \x55 and the write gpio command
+    #   \x5A plus the value byte and its complement
+    $select=sprintf("\x5A%c%c",252+$value,3-$value);   
+    #-- reset the bus
+    OWX_Reset($master);
+    #-- read the data
+    $res=OWX_Complex($master,$owx_dev,$select,1);
+    if( $res eq 0 ){
+      return "OWXSWITCH: Device $owx_dev not accessible in writing"; 
+    }
+  #--  family = 12 => DS2406
+  }elsif( $hash->{OW_FAMILY} eq "12" ) {
+    #=============== set gpio values ===============================
+    # Wrriting the output state via the access channel command does
+    # not work contrary to documentation. Using the write status command 
+    #-- issue the match ROM command \x55 and the read status command
+    #   \xAA at address TA1 = \x07 TA2 = \x00   
+    #-- reset the bus
+    OWX_Reset($master);
+    #-- read the data
+    $res        = OWX_Complex($master,$owx_dev,"\xAA\x07\x00",1);
+    my $stat    = substr($res,10,1);
+    my $statneu = ( $stat & 159 ) | (($value<<5) & 96) ; 
+    #-- issue the match ROM command \x55 and the write status command
+    #   \x55 at address TA1 = \x07 TA2 = \x00
+    #
+    $select=sprintf("\x55\x07\x00%c",$statneu);   
+    #-- reset the bus
+    OWX_Reset($master);
+    #-- read the data
+    $res=OWX_Complex($master,$owx_dev,$select,2);
+    if( $res eq 0 ){
+      return "OWXSWITCH: Device $owx_dev not accessible in writing"; 
+    }
+    
+  } else {
+    return "OWXSWITCH: Unknown device family $hash->{OW_FAMILY}\n";
   }
-
   #-- reset the bus
   OWX_Reset($master);
 
@@ -735,23 +806,33 @@ sub OWXSWITCH_SetState($$) {
   @data=split(//,substr($res,10));
   
   #my $ress = "OWXSWITCH_Set: three data bytes ";
-  #  for($i=0;$i<3;$i++){
+  #  for($i=0;$i<int(@data);$i++){
   #  my $j=int(ord($data[$i])/16);
   #  my $k=ord($data[$i])%16;
   #  $ress.=sprintf "0x%1x%1x ",$j,$k;
   #  }
   #Log 1, $ress;
 
-  if( $data[2] ne "\xAA"){
-    Log 1, "OWXSWITCH: State could not be set";
-    return "OWXSWITCH: State could not be set";
-  } 
- 
+  #-- family = 3A => DS2413
+  if( $hash->{OW_FAMILY} eq "3A" ) {
+    if( $data[2] ne "\xAA"){
+      return "OWXSWITCH: State could not be set for device $owx_dev";
+    } 
+   #--  family = 12 => DS2406
+  }elsif( $hash->{OW_FAMILY} eq "12" ) {
+    #-- very crude check - should be CRC
+    if( int(@data) != 5){
+      return "OWXSWITCH: State could not be set for device $owx_dev";
+    } 
+  }
+  
   #-- Put the new values in the system variables
   #-- This holds only for DS2413 
   
   $owg_val[0] = $value % 2;
+  $owg_vax[0] = $owg_val[0];
   $owg_val[1] = int($value / 2);
+  $owg_vax[1] = $owg_val[1];
   return undef
 }
 
diff --git a/fhem/contrib/1-Wire/21_OWTHERM.pm b/fhem/contrib/1-Wire/21_OWTHERM.pm
index 9f5ffcb39..a36c09a75 100755
--- a/fhem/contrib/1-Wire/21_OWTHERM.pm
+++ b/fhem/contrib/1-Wire/21_OWTHERM.pm
@@ -15,7 +15,7 @@
 # Prof. Dr. Peter A. Henning, 2012
 # Martin Fischer, 2011
 # 
-# Version 2.12 - July, 2012
+# Version 2.13 - July, 2012
 #   
 # Setup bus device in fhem.cfg as
 #
@@ -25,7 +25,7 @@
 #     
 #       <model> is a 1-Wire device type. If omitted, we assume this to be an
 #              DS1820 temperature sensor 
-#              Currently allowed values are DS1820, DS1822
+#              Currently allowed values are DS1820, DS18B20, DS1822
 #       <ROM_ID> is a 12 character (6 byte) 1-Wire ROM ID 
 #                without Family ID, e.g. A2D90D000800 
 #       [interval] is an optional query interval in seconds