diff --git a/MqttTopics.h b/MqttTopics.h
index 138e370..04c089a 100644
--- a/MqttTopics.h
+++ b/MqttTopics.h
@@ -9,6 +9,7 @@
 #define mqtt_topic_battery_lock_distance "/battery/lockDistance"
 
 #define mqtt_topic_lock_state "/lock/state"
+#define mqtt_topic_lock_binary_state "/lock/binaryState"
 #define mqtt_topic_lock_trigger "/lock/trigger"
 #define mqtt_topic_lock_auth_id "/lock/authorizationId"
 #define mqtt_topic_lock_auth_name "/lock/authorizationName"
diff --git a/Network.cpp b/Network.cpp
index e669a7d..69bc1e5 100644
--- a/Network.cpp
+++ b/Network.cpp
@@ -365,7 +365,7 @@ void Network::publishHASSConfig(char* deviceType, const char* baseTopic, char* n
         configJSON.concat("\",\"pl_open\":\"");
         configJSON.concat(openAction);
         configJSON.concat("\",\"stat_t\":\"~");
-        configJSON.concat(mqtt_topic_lock_state);
+        configJSON.concat(mqtt_topic_lock_binary_state);
         configJSON.concat("\",\"stat_locked\":\"");
         configJSON.concat(lockedState);
         configJSON.concat("\",\"stat_unlocked\":\"");
diff --git a/NetworkLock.cpp b/NetworkLock.cpp
index 7f705dd..d490465 100644
--- a/NetworkLock.cpp
+++ b/NetworkLock.cpp
@@ -43,6 +43,8 @@ void NetworkLock::initialize()
 
     _network->setMqttPresencePath(_mqttPath);
 
+    _haEnabled = _preferences->getString(preference_mqtt_hass_discovery) != "";
+
     _network->subscribe(_mqttPath, mqtt_topic_lock_action);
     for(const auto& topic : _configTopics)
     {
@@ -117,6 +119,11 @@ void NetworkLock::publishKeyTurnerState(const NukiLock::KeyTurnerState& keyTurne
         memset(&str, 0, sizeof(str));
         lockstateToString(keyTurnerState.lockState, str);
         publishString(mqtt_topic_lock_state, str);
+
+        if(_haEnabled)
+        {
+            publishBinaryState(keyTurnerState.lockState);
+        }
     }
 
     if(_firstTunerStatePublish || keyTurnerState.trigger != lastKeyTurnerState.trigger)
@@ -155,6 +162,27 @@ void NetworkLock::publishKeyTurnerState(const NukiLock::KeyTurnerState& keyTurne
     _firstTunerStatePublish = false;
 }
 
+void NetworkLock::publishBinaryState(NukiLock::LockState lockState)
+{
+    switch(lockState)
+    {
+        case NukiLock::LockState::Locked:
+        case NukiLock::LockState::Locking:
+            publishString(mqtt_topic_lock_binary_state, "locked");
+            break;
+        case NukiLock::LockState::Unlocked:
+        case NukiLock::LockState::Unlocking:
+        case NukiLock::LockState::Unlatched:
+        case NukiLock::LockState::Unlatching:
+        case NukiLock::LockState::UnlockedLnga:
+            publishString(mqtt_topic_lock_binary_state, "unlocked");
+            break;
+        default:
+            break;
+    }
+}
+
+
 void NetworkLock::publishAuthorizationInfo(const uint32_t authId, const char *authName)
 {
     publishUInt(mqtt_topic_lock_auth_id, authId);
diff --git a/NetworkLock.h b/NetworkLock.h
index 1af06c0..45b3234 100644
--- a/NetworkLock.h
+++ b/NetworkLock.h
@@ -20,6 +20,7 @@ public:
     void update();
 
     void publishKeyTurnerState(const NukiLock::KeyTurnerState& keyTurnerState, const NukiLock::KeyTurnerState& lastKeyTurnerState);
+    void publishBinaryState(NukiLock::LockState lockState);
     void publishAuthorizationInfo(const uint32_t authId, const char* authName);
     void publishCommandResult(const char* resultStr);
     void publishBatteryReport(const NukiLock::BatteryReport& batteryReport);
@@ -52,6 +53,7 @@ private:
 
     bool _firstTunerStatePublish = true;
     unsigned long _lastMaintenanceTs = 0;
+    bool _haEnabled= false;
 
     bool (*_lockActionReceivedCallback)(const char* value) = nullptr;
     void (*_configUpdateReceivedCallback)(const char* path, const char* value) = nullptr;
diff --git a/NetworkOpener.cpp b/NetworkOpener.cpp
index 2b32f8f..3b2dab9 100644
--- a/NetworkOpener.cpp
+++ b/NetworkOpener.cpp
@@ -34,6 +34,8 @@ void NetworkOpener::initialize()
         _preferences->putString(preference_mqtt_opener_path, _mqttPath);
     }
 
+    _haEnabled = _preferences->getString(preference_mqtt_hass_discovery) != "";
+
     _network->subscribe(_mqttPath, mqtt_topic_lock_action);
     for(const auto& topic : _configTopics)
     {
@@ -86,6 +88,11 @@ void NetworkOpener::publishKeyTurnerState(const NukiOpener::OpenerState& keyTurn
         memset(&str, 0, sizeof(str));
         lockstateToString(keyTurnerState.lockState, str);
         publishString(mqtt_topic_lock_state, str);
+
+        if(_haEnabled)
+        {
+            publishBinaryState(keyTurnerState.lockState);
+        }
     }
 
     if(_firstTunerStatePublish || keyTurnerState.trigger != lastKeyTurnerState.trigger)
@@ -118,6 +125,23 @@ void NetworkOpener::publishKeyTurnerState(const NukiOpener::OpenerState& keyTurn
     _firstTunerStatePublish = false;
 }
 
+void NetworkOpener::publishBinaryState(NukiOpener::LockState lockState)
+{
+    switch(lockState)
+    {
+        case NukiOpener::LockState::Locked:
+        case NukiOpener::LockState::RTOactive:
+            publishString(mqtt_topic_lock_binary_state, "locked");
+            break;
+        case NukiOpener::LockState::Open:
+        case NukiOpener::LockState::Opening:
+            publishString(mqtt_topic_lock_binary_state, "unlocked");
+            break;
+        default:
+            break;
+    }
+}
+
 void NetworkOpener::publishAuthorizationInfo(const uint32_t authId, const char *authName)
 {
     publishUInt(mqtt_topic_lock_auth_id, authId);
@@ -224,4 +248,4 @@ bool NetworkOpener::comparePrefixedPath(const char *fullPath, const char *subPat
     char prefixedPath[500];
     buildMqttPath(subPath, prefixedPath);
     return strcmp(fullPath, prefixedPath) == 0;
-}
\ No newline at end of file
+}
diff --git a/NetworkOpener.h b/NetworkOpener.h
index 4dcc428..db90ee1 100644
--- a/NetworkOpener.h
+++ b/NetworkOpener.h
@@ -19,6 +19,7 @@ public:
     void initialize();
 
     void publishKeyTurnerState(const NukiOpener::OpenerState& keyTurnerState, const NukiOpener::OpenerState& lastKeyTurnerState);
+    void publishBinaryState(NukiOpener::LockState lockState);
     void publishAuthorizationInfo(const uint32_t authId, const char* authName);
     void publishCommandResult(const char* resultStr);
     void publishBatteryReport(const NukiOpener::BatteryReport& batteryReport);
@@ -54,6 +55,7 @@ private:
     std::vector<char*> _configTopics;
 
     bool _firstTunerStatePublish = true;
+    bool _haEnabled= false;
 
     bool (*_lockActionReceivedCallback)(const char* value) = nullptr;
     void (*_configUpdateReceivedCallback)(const char* path, const char* value) = nullptr;
diff --git a/Version.h b/Version.h
index c7eb4ec..345ba74 100644
--- a/Version.h
+++ b/Version.h
@@ -1,3 +1,3 @@
 #pragma once
 
-#define nuki_hub_version "5.5"
\ No newline at end of file
+#define nuki_hub_version "5.6"
\ No newline at end of file
diff --git a/webflash/nuki_hub.bin b/webflash/nuki_hub.bin
index a7e48d3..9119dd6 100644
Binary files a/webflash/nuki_hub.bin and b/webflash/nuki_hub.bin differ