diff --git a/CHANGELOG_LATEST.md b/CHANGELOG_LATEST.md
index f29d2b944..13aeab59e 100644
--- a/CHANGELOG_LATEST.md
+++ b/CHANGELOG_LATEST.md
@@ -5,9 +5,11 @@
 ## Added
 
 ## Fixed
-- lastcode broke MQTT JSON structure [#228]
+
+- lastcode broke MQTT JSON structure [#228](https://github.com/emsesp/EMS-ESP32/issues/228)
 - overlapping while reading sequence of EMS1.0 telegrams
 - redundant telegram readings (because of offset overflow)
+- added missing RC30/Moduline400 [#243](https://github.com/emsesp/EMS-ESP32/issues/243)
 
 ## Changed
 
diff --git a/src/devices/thermostat.cpp b/src/devices/thermostat.cpp
index 741256cb8..f2e900c15 100644
--- a/src/devices/thermostat.cpp
+++ b/src/devices/thermostat.cpp
@@ -2691,6 +2691,17 @@ void Thermostat::register_device_values() {
     case EMS_DEVICE_FLAG_RC20:
         register_device_value(TAG_THERMOSTAT_DATA, &dateTime_, DeviceValueType::STRING, nullptr, FL_(dateTime), DeviceValueUOM::NONE); // can't set datetime
         break;
+    case EMS_DEVICE_FLAG_RC30:
+        register_device_value(TAG_THERMOSTAT_DATA, &dateTime_, DeviceValueType::STRING, nullptr, FL_(dateTime), DeviceValueUOM::NONE); // can't set datetime
+        register_device_value(TAG_THERMOSTAT_DATA, &ibaMainDisplay_, DeviceValueType::ENUM, FL_(enum_ibaMainDisplay), FL_(ibaMainDisplay), DeviceValueUOM::NONE);
+        register_device_value(TAG_THERMOSTAT_DATA, &ibaLanguage_, DeviceValueType::ENUM, FL_(enum_ibaLanguage), FL_(ibaLanguage), DeviceValueUOM::NONE);
+        register_device_value(TAG_THERMOSTAT_DATA,
+                              &ibaClockOffset_,
+                              DeviceValueType::INT,
+                              nullptr,
+                              FL_(ibaClockOffset),
+                              DeviceValueUOM::SECONDS); // offset (in sec) to clock, 0xff=-1s, 0x02=2s
+        break;
     case EMS_DEVICE_FLAG_RC30_N:
         register_device_value(TAG_THERMOSTAT_DATA, &dateTime_, DeviceValueType::STRING, nullptr, FL_(dateTime), DeviceValueUOM::NONE); // can't set datetime
         register_device_value(TAG_THERMOSTAT_DATA, &ibaMainDisplay_, DeviceValueType::ENUM, FL_(enum_ibaMainDisplay), FL_(ibaMainDisplay), DeviceValueUOM::NONE);
@@ -2940,6 +2951,9 @@ void Thermostat::register_device_values_hc(std::shared_ptr<Thermostat::HeatingCi
         register_device_value(tag, &hc->summertemp, DeviceValueType::UINT, nullptr, FL_(summertemp), DeviceValueUOM::DEGREES, MAKE_CF_CB(set_summertemp));
         register_device_value(tag, &hc->summermode, DeviceValueType::BOOL, nullptr, FL_(summermode), DeviceValueUOM::NONE);
         break;
+    case EMS_DEVICE_FLAG_RC30:
+        register_device_value(tag, &hc->mode, DeviceValueType::ENUM, FL_(enum_mode3), FL_(mode), DeviceValueUOM::NONE, MAKE_CF_CB(set_mode));
+        break;
     case EMS_DEVICE_FLAG_RC30_N:
     case EMS_DEVICE_FLAG_RC35:
         register_device_value(tag, &hc->mode, DeviceValueType::ENUM, FL_(enum_mode3), FL_(mode), DeviceValueUOM::NONE, MAKE_CF_CB(set_mode));
diff --git a/src/telegram.cpp b/src/telegram.cpp
index c4166db8b..186430b91 100644
--- a/src/telegram.cpp
+++ b/src/telegram.cpp
@@ -607,19 +607,20 @@ void TxService::retry_tx(const uint8_t operation, const uint8_t * data, const ui
     tx_telegrams_.emplace_front(tx_telegram_id_++, std::move(telegram_last_), true, get_post_send_query());
 }
 
+// send a request to read the next block of data from longer telegrams
 uint16_t TxService::read_next_tx(uint8_t offset) {
     // add to the top/front of the queue
     uint8_t message_data[1] = {EMS_MAX_TELEGRAM_LENGTH}; // request all data, 32 bytes
     if (telegram_last_->offset != offset) {
         return 0;
     }
-    
-    uint8_t add_offset = 25;                //for EMS+ telegram increase offset by 25
-    if (telegram_last_->type_id < 0x100) {  //but for EMS1.0 by 27
+
+    uint8_t add_offset = 25;               // for EMS+ telegram increase offset by 25
+    if (telegram_last_->type_id < 0x100) { // but for EMS1.0 by 27
         add_offset = 27;
     }
 
-    if (UINT8_MAX - telegram_last_->offset < add_offset) {   //stop if new offset would overflow
+    if (UINT8_MAX - telegram_last_->offset < add_offset) { // stop if new offset would overflow
         return 0;
     }
 
diff --git a/src/version.h b/src/version.h
index 37decfc86..5987e4f1f 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define EMSESP_APP_VERSION "3.3.1b0"
+#define EMSESP_APP_VERSION "3.3.1b1"