diff --git a/fhem/FHEM/36_JeeLink.pm b/fhem/FHEM/36_JeeLink.pm
index cbcf487f6..5969056a4 100644
--- a/fhem/FHEM/36_JeeLink.pm
+++ b/fhem/FHEM/36_JeeLink.pm
@@ -134,7 +134,8 @@ JeeLink_Set($@)
 
   my $name = shift @a;
   my $cmd = shift @a;
-  my $arg = join("", @a);
+  my $arg = shift @a;
+  my $arg2 = shift @a;
 
   my $list = "raw:noArg";
   $list .= " LaCrossePairForSec";
@@ -147,8 +148,8 @@ JeeLink_Set($@)
     JeeLink_SimpleWrite($hash, $arg);
 
   } elsif( $cmd eq "LaCrossePairForSec" ) {
-    return "Usage: set $name LaCrossePairForSec <seconds_active>" if(!$arg || $arg !~ m/^\d+$/);
-    $hash->{LaCrossePair} = 1; 
+    return "Usage: set $name LaCrossePairForSec <seconds_active> [ignore_battery]" if(!$arg || $arg !~ m/^\d+$/ || $arg2 ne "ignore_battery");
+    $hash->{LaCrossePair} = $arg2?2:1; 
     InternalTimer(gettimeofday()+$arg, "JeeLink_RemoveLaCrossePair", $hash, 1);
 
   } else {
@@ -561,8 +562,9 @@ JeeLink_Attr(@)
     <li>raw &lt;datar&gt;<br>
         send &lt;data&gt; as a raw message to the JeeLink to be transmitted over the RF link.
         </li><br>
-    <li>LaCrossePair &lt;sec&gt;<br>
-       enable autocreate of new LaCrosse sensors vor &lt;sec&gt; seconds
+    <li>LaCrossePairForSec &lt;sec&gt; [ignore_battery]<br>
+       enable autocreate of new LaCrosse sensors for &lt;sec&gt; seconds. if ignore_battery is not given only sensors
+       sending the 'new battery' flag will be created.
         </li>
   </ul>
 
diff --git a/fhem/FHEM/36_LaCrosse.pm b/fhem/FHEM/36_LaCrosse.pm
index a3606036c..53b387b30 100644
--- a/fhem/FHEM/36_LaCrosse.pm
+++ b/fhem/FHEM/36_LaCrosse.pm
@@ -134,9 +134,9 @@ LaCrosse_Parse($$)
     Log3 $name, 3, "LaCrosse Unknown device $rname, please define it";
 
     my $iohash = $rhash->{IODev};
-    return undef if( $iohash->{LaCrossePair} );
+    return undef if( !$iohash->{LaCrossePair} );
 
-    return "UNDEFINED LaCrosse_$rname LaCrosse $raddr" if( $battery_new );
+    return "UNDEFINED LaCrosse_$rname LaCrosse $raddr" if( $battery_new || $iohash->{LaCrossePair} == 2 );
     return undef;
   }
 
@@ -190,7 +190,7 @@ LaCrosse_Attr(@)
 <ul>
 
   <tr><td>
-  FHEM module for LaCrosse IT+ (and TFA 35.1111.IT and possibly Conrad WS9160-IT) Temperature and Humidity sensors.<br><br>
+  FHEM module for LaCrosse Temperature and Humidity sensors.<br><br>
 
   It can be integrated in to FHEM via a <a href="#JeeLink">JeeLink</a> as the IODevice.<br><br>
 
@@ -202,7 +202,7 @@ LaCrosse_Attr(@)
     <code>define &lt;name&gt; LaCrosse &lt;addr&gt;</code> <br>
     <br>
     addr is a 2 digit hex number to identify the LaCrosse device.<br><br>
-    Note: devices are autocreated on reception of the first message with new battery flag set if LaCrossePair is active for the JeeLink IODevice device.<br>
+    Note: devices are autocreated only if LaCrossePairForSec is active for the <a href="#JeeLink">JeeLink</a> IODevice device.<br>
   </ul>
   <br>
 
@@ -219,9 +219,9 @@ LaCrosse_Attr(@)
   <a name="LaCrosse_Readings"></a>
   <b>Readings</b>
   <ul>
-    <li>battery[]<b>
+    <li>battery[]<br>
       ok or low</li>
-    <li>temperature[]<b>
+    <li>temperature[]<br>
       Notice: see the filterThreshold attribute.</li>
     <li>humidity</li>
   </ul><br>