diff --git a/fhem/FHEM/93_PWMR.pm b/fhem/FHEM/93_PWMR.pm
index 3c756b550..7d7218781 100644
--- a/fhem/FHEM/93_PWMR.pm
+++ b/fhem/FHEM/93_PWMR.pm
@@ -44,6 +44,7 @@
 # 14.12.16 GA fix adjust rounding of PVal and newpulsePID
 # 14.12.16 GA fix supply DBuffer with delta temps for usePID=2 calculation
 # 14.12.16 GA add implement get previousTemps
+# 01.08.17 GA add documentation for attribute disable
 
 
 # module for PWM (Pulse Width Modulation) calculation
@@ -1807,6 +1808,10 @@ PWMR_valueFormat(@)
 
   <b>Attributes</b>
   <ul>
+    <li>disable<br>
+        PWMR objects with attribute disable set to <i>1</i> will be excluded in the calculation loop of the PWM object.
+        </li><br>
+
     <li>frostProtect<br>
         Switch on (1) of off (0) frostProtectMode. <i>desired-temp</i> will be set to <i>tempFrostProtect</i> in autoCalcMode.
         </li><br>