diff --git a/sonoff/_releasenotes.ino b/sonoff/_releasenotes.ino
index c8a76e970..7c3159de2 100644
--- a/sonoff/_releasenotes.ino
+++ b/sonoff/_releasenotes.ino
@@ -1,5 +1,6 @@
 /* 5.14.0a
  * Add Eastron SDM630 energy meter (#2735)
+ * Add KNX communication enhancement (#2742)
  *
  * 5.14.0 20180515
  * Update language files
diff --git a/sonoff/language/bg-BG.h b/sonoff/language/bg-BG.h
index 5aef7c4a1..d4856eb19 100644
--- a/sonoff/language/bg-BG.h
+++ b/sonoff/language/bg-BG.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Друго"
 #define D_SENT_TO "изпратен до"
 #define D_KNX_WARNING "Груповият адрес ( 0 / 0 / 0 ) е резервиран и не може да бъде използван."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Използвана енергия днес"
diff --git a/sonoff/language/cs-CZ.h b/sonoff/language/cs-CZ.h
index 13935c6eb..bdaef9b36 100644
--- a/sonoff/language/cs-CZ.h
+++ b/sonoff/language/cs-CZ.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Jiné"
 #define D_SENT_TO "pošli"
 #define D_KNX_WARNING "Skupinová adresa ( 0 / 0 / 0 ) je rezervována a nemůže být použita."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Spotřeba Dnes"
diff --git a/sonoff/language/de-DE.h b/sonoff/language/de-DE.h
index 1dcdce025..e1b925ac6 100644
--- a/sonoff/language/de-DE.h
+++ b/sonoff/language/de-DE.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Energie heute"
diff --git a/sonoff/language/el-GR.h b/sonoff/language/el-GR.h
index b3d3f50a8..fa38c7c97 100644
--- a/sonoff/language/el-GR.h
+++ b/sonoff/language/el-GR.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Αλλο"
 #define D_SENT_TO "αποστολή σε"
 #define D_KNX_WARNING "Η Ομάδα Διευθύνσεων ( 0 / 0 / 0 ) είναι δεσμευμένη και δεν μπορεί να χρησιμοποιηθεί."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Energy Σήμερα"
diff --git a/sonoff/language/en-GB.h b/sonoff/language/en-GB.h
index 4cdb117f3..3e5b0a0c0 100644
--- a/sonoff/language/en-GB.h
+++ b/sonoff/language/en-GB.h
@@ -28,7 +28,7 @@
  * Use online command StateText to translate ON, OFF, HOLD and TOGGLE.
  * Use online command Prefix to translate cmnd, stat and tele.
  *
- * Updated until v5.14.0
+ * Updated until v5.14.0a
 \*********************************************************************/
 
 //#define LANGUAGE_MODULE_NAME         // Enable to display "Module Generic" (ie Spanish), Disable to display "Generic Module" (ie English)
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Energy Today"
diff --git a/sonoff/language/es-AR.h b/sonoff/language/es-AR.h
index a05cd7e03..d9c37fa0e 100644
--- a/sonoff/language/es-AR.h
+++ b/sonoff/language/es-AR.h
@@ -28,7 +28,7 @@
  * Use online command StateText to translate ON, OFF, HOLD and TOGGLE.
  * Use online command Prefix to translate cmnd, stat and tele.
  *
- * Updated until v5.14.0
+ * Updated until v5.14.0a
 \*********************************************************************/
 
 #define LANGUAGE_MODULE_NAME         // Enable to display "Module Generic" (ie Spanish), Disable to display "Generic Module" (ie English)
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Otro"
 #define D_SENT_TO "enviada a"
 #define D_KNX_WARNING "La dirección de grupo ( 0 / 0 / 0 ) está reservada y no puede ser utilizada."
+#define D_KNX_ENHANCEMENT "Mejora de Comunicación"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Energía Hoy"
diff --git a/sonoff/language/fr-FR.h b/sonoff/language/fr-FR.h
index d37647912..843f4ef51 100644
--- a/sonoff/language/fr-FR.h
+++ b/sonoff/language/fr-FR.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Autre"
 #define D_SENT_TO "envoyé à"
 #define D_KNX_WARNING "L'Adresse de Groupe ( 0 / 0 / 0 ) est réservée et ne peut être utilisée."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xsns_03_energy.ino
 #define D_ENERGY_TODAY "Énergie aujourd'hui"
diff --git a/sonoff/language/hu-HU.h b/sonoff/language/hu-HU.h
index 46f2ca82a..a5f373146 100644
--- a/sonoff/language/hu-HU.h
+++ b/sonoff/language/hu-HU.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Mai Energia"
diff --git a/sonoff/language/it-IT.h b/sonoff/language/it-IT.h
index 3fde551ec..ceb1faa16 100644
--- a/sonoff/language/it-IT.h
+++ b/sonoff/language/it-IT.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Altro"
 #define D_SENT_TO "invia a"
 #define D_KNX_WARNING "L'indirizzo del gruppo ( 0 / 0 / 0 ) è riservato e non può essere usato."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Energia Oggi"
diff --git a/sonoff/language/nl-NL.h b/sonoff/language/nl-NL.h
index 47f682006..df970798f 100644
--- a/sonoff/language/nl-NL.h
+++ b/sonoff/language/nl-NL.h
@@ -28,7 +28,7 @@
  * Use online command StateText to translate ON, OFF, HOLD and TOGGLE.
  * Use online command Prefix to translate cmnd, stat and tele.
  *
- * Updated until v5.14.0
+ * Updated until v5.14.0a
 \*********************************************************************/
 
 //#define LANGUAGE_MODULE_NAME         // Enable to display "Module Generic" (ie Spanish), Disable to display "Generic Module" (ie English)
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Overige"
 #define D_SENT_TO "verzend naar"
 #define D_KNX_WARNING "Groep adres (0/0/0) is gereserveerd en mag niet worden gebruikt."
+#define D_KNX_ENHANCEMENT "Verbeter verbinding"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Verbruik vandaag"
diff --git a/sonoff/language/pl-PL.h b/sonoff/language/pl-PL.h
index f63eb88b6..2b96e5195 100644
--- a/sonoff/language/pl-PL.h
+++ b/sonoff/language/pl-PL.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Energia Dzisiaj"
diff --git a/sonoff/language/pt-BR.h b/sonoff/language/pt-BR.h
index e6a93c8f1..1740abbdd 100644
--- a/sonoff/language/pt-BR.h
+++ b/sonoff/language/pt-BR.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Outros"
 #define D_SENT_TO "Enviar para"
 #define D_KNX_WARNING "O endereço ( 0 / 0 / 0 ) é reservado e não pode ser usado."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Consumo energético de hoje"
diff --git a/sonoff/language/pt-PT.h b/sonoff/language/pt-PT.h
index df93d370e..c8d8944af 100644
--- a/sonoff/language/pt-PT.h
+++ b/sonoff/language/pt-PT.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Consumo energético de hoje"
diff --git a/sonoff/language/ru-RU.h b/sonoff/language/ru-RU.h
index 980875891..bd1440d28 100644
--- a/sonoff/language/ru-RU.h
+++ b/sonoff/language/ru-RU.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "Энергия Сегодня"
diff --git a/sonoff/language/zh-CN.h b/sonoff/language/zh-CN.h
index f452f1fe9..113c470b9 100644
--- a/sonoff/language/zh-CN.h
+++ b/sonoff/language/zh-CN.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "今日用电量"
diff --git a/sonoff/language/zh-TW.h b/sonoff/language/zh-TW.h
index 4120b6f54..14e9cad00 100644
--- a/sonoff/language/zh-TW.h
+++ b/sonoff/language/zh-TW.h
@@ -400,6 +400,7 @@
 #define D_KNX_COMMAND_OTHER "Other"
 #define D_SENT_TO "sent to"
 #define D_KNX_WARNING "The group address ( 0 / 0 / 0 ) is reserved and can not be used."
+#define D_KNX_ENHANCEMENT "Communication Enhancement"
 
 // xdrv_03_energy.ino
 #define D_ENERGY_TODAY "今日用電量"
diff --git a/sonoff/settings.h b/sonoff/settings.h
index ec156c85a..6f67c3843 100644
--- a/sonoff/settings.h
+++ b/sonoff/settings.h
@@ -52,7 +52,7 @@ typedef union {                            // Restricted by MISRA-C Rule 18.4 bu
     uint32_t rules_once : 1;               // bit 24 (v5.12.0k)
     uint32_t knx_enabled : 1;              // bit 25 (v5.12.0l) KNX
     uint32_t device_index_enable : 1;      // bit 26 (v5.13.1a)
-    uint32_t spare27 : 1;
+    uint32_t knx_enable_enhancement : 1;   // bit 27 (v5.14.0a) KNX
     uint32_t spare28 : 1;
     uint32_t spare29 : 1;
     uint32_t spare30 : 1;
diff --git a/sonoff/xdrv_11_knx.ino b/sonoff/xdrv_11_knx.ino
index 89959d269..b5eef6989 100644
--- a/sonoff/xdrv_11_knx.ino
+++ b/sonoff/xdrv_11_knx.ino
@@ -60,9 +60,11 @@ address_t KNX_addr;        // KNX Address converter variable
 #define KNX_TEMPERATURE 17
 #define KNX_HUMIDITY 18
 #define KNX_MAX_device_param 18
+#define TOGGLE_INHIBIT_TIME 10 // 10*50mseg = 500mseg
 
 float last_temp;
 float last_hum;
+byte toggle_inhibit;
 
 typedef struct __device_parameters
 {
@@ -461,21 +463,38 @@ void KNX_CB_Action(message_t const &msg, void *arg)
       }
       else if (chan->type < 17) // Toggle Relays
       {
-        ExecuteCommandPower((chan->type) -8, 2);
+        if (!toggle_inhibit) {
+          ExecuteCommandPower((chan->type) -8, 2);
+          if (Settings.flag.knx_enable_enhancement) {
+            toggle_inhibit = TOGGLE_INHIBIT_TIME;
+          }
+        }
       }
       break;
     case KNX_CT_READ:
       if (chan->type < 9) // reply Relays status
       {
         knx.answer_1bit(msg.received_on, chan->last_state);
+        if (Settings.flag.knx_enable_enhancement) {
+          knx.answer_1bit(msg.received_on, chan->last_state);
+          knx.answer_1bit(msg.received_on, chan->last_state);
+        }
       }
       else if (chan->type = KNX_TEMPERATURE) // Reply Temperature
       {
         knx.answer_2byte_float(msg.received_on, last_temp);
+        if (Settings.flag.knx_enable_enhancement) {
+          knx.answer_2byte_float(msg.received_on, last_temp);
+          knx.answer_2byte_float(msg.received_on, last_temp);
+        }
       }
       else if (chan->type = KNX_HUMIDITY) // Reply Humidity
       {
         knx.answer_2byte_float(msg.received_on, last_hum);
+        if (Settings.flag.knx_enable_enhancement) {
+          knx.answer_2byte_float(msg.received_on, last_hum);
+          knx.answer_2byte_float(msg.received_on, last_hum);
+        }
       }
       break;
   }
@@ -493,6 +512,10 @@ void KnxUpdatePowerState(byte device, power_t state)
   while ( i != KNX_Empty ) {
     KNX_addr.value = Settings.knx_GA_addr[i];
     knx.write_1bit(KNX_addr, device_param[device -1].last_state);
+    if (Settings.flag.knx_enable_enhancement) {
+      knx.write_1bit(KNX_addr, device_param[device -1].last_state);
+      knx.write_1bit(KNX_addr, device_param[device -1].last_state);
+    }
 
     snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_KNX "%s = %d " D_SENT_TO " %d.%d.%d"),
      device_param_ga[device -1], device_param[device -1].last_state,
@@ -522,6 +545,10 @@ void KnxSendButtonPower(byte key, byte device, byte state)
   while ( i != KNX_Empty ) {
     KNX_addr.value = Settings.knx_GA_addr[i];
     knx.write_1bit(KNX_addr, !(state == 0));
+    if (Settings.flag.knx_enable_enhancement) {
+      knx.write_1bit(KNX_addr, !(state == 0));
+      knx.write_1bit(KNX_addr, !(state == 0));
+    }
 
     snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_KNX "%s = %d " D_SENT_TO " %d.%d.%d"),
      device_param_ga[device + 7], !(state == 0),
@@ -550,6 +577,10 @@ void KnxSensor(byte sensor_type, float value)
   while ( i != KNX_Empty ) {
     KNX_addr.value = Settings.knx_GA_addr[i];
     knx.write_2byte_float(KNX_addr, value);
+    if (Settings.flag.knx_enable_enhancement) {
+      knx.write_2byte_float(KNX_addr, value);
+      knx.write_2byte_float(KNX_addr, value);
+    }
 
     snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_KNX "%s " D_SENT_TO " %d.%d.%d "),
      device_param_ga[sensor_type -1],
@@ -578,8 +609,11 @@ const char HTTP_FORM_KNX[] PROGMEM =
   "<br/><br/>" D_KNX_PHYSICAL_ADDRESS_NOTE "<br/><br/>"
   "<input style='width:10%;' id='b1' name='b1' type='checkbox'";
 
+const char HTTP_FORM_KNX1[] PROGMEM =
+  "><b>" D_KNX_ENABLE "   </b><input style='width:10%;' id='b2' name='b2' type='checkbox'";
+
 const char HTTP_FORM_KNX2[] PROGMEM =
-  "><b>" D_KNX_ENABLE "</b><br/></center><br/>"
+  "><b>" D_KNX_ENHANCEMENT "</b><br/></center><br/>"
 
   "<fieldset><center>"
   "<b>" D_KNX_GROUP_ADDRESS_TO_WRITE "</b><hr>"
@@ -696,6 +730,8 @@ void HandleKNXConfiguration()
     page.replace(F("{knl"), String(KNX_physs_addr.pa.line));
     page.replace(F("{knm"), String(KNX_physs_addr.pa.member));
     if ( Settings.flag.knx_enabled ) { page += F(" checked"); }
+    page += FPSTR(HTTP_FORM_KNX1);
+    if ( Settings.flag.knx_enable_enhancement ) { page += F(" checked"); }
 
     page += FPSTR(HTTP_FORM_KNX2);
     for (byte i = 0; i < KNX_MAX_device_param ; i++)
@@ -822,8 +858,9 @@ void KNX_Save_Settings()
   address_t KNX_addr;
 
   Settings.flag.knx_enabled = WebServer->hasArg("b1");
-  snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_KNX D_ENABLED ": %d "),
-   Settings.flag.knx_enabled);
+  Settings.flag.knx_enable_enhancement = WebServer->hasArg("b2");
+  snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_KNX D_ENABLED ": %d, " D_KNX_ENHANCEMENT ": %d"),
+   Settings.flag.knx_enabled, Settings.flag.knx_enable_enhancement );
   AddLog(LOG_LEVEL_DEBUG);
 
   stmp = WebServer->arg("area");
@@ -883,6 +920,11 @@ boolean Xdrv11(byte function)
       case FUNC_LOOP:
         knx.loop();  // Process knx events
         break;
+      case FUNC_EVERY_50_MSECOND:
+        if (toggle_inhibit) {
+          toggle_inhibit--;
+        }
+        break;
 //      case FUNC_COMMAND:
 //        result = KNXCommand();
 //        break;