diff --git a/CHANGELOG_LATEST.md b/CHANGELOG_LATEST.md
index 1e0d3f44d..f29d2b944 100644
--- a/CHANGELOG_LATEST.md
+++ b/CHANGELOG_LATEST.md
@@ -6,6 +6,8 @@
 
 ## Fixed
 - lastcode broke MQTT JSON structure [#228]
+- overlapping while reading sequence of EMS1.0 telegrams
+- redundant telegram readings (because of offset overflow)
 
 ## Changed
 
diff --git a/src/emsesp.cpp b/src/emsesp.cpp
index bd7ce5cca..d31849933 100644
--- a/src/emsesp.cpp
+++ b/src/emsesp.cpp
@@ -1191,7 +1191,7 @@ void EMSESP::incoming_telegram(uint8_t * data, const uint8_t length) {
                 txservice_.send_poll(); // close the bus
                 txservice_.reset_retry_count();
                 tx_successful = true;
-                // if telegram is longer read next part with offset + 25 for ems+
+                // if telegram is longer read next part with offset +25 for ems+ or +27 for ems1.0
                 if (length == 32) {
                     if (txservice_.read_next_tx(data[3]) == read_id_) {
                         read_next_ = true;
diff --git a/src/telegram.cpp b/src/telegram.cpp
index f56ac0148..c4166db8b 100644
--- a/src/telegram.cpp
+++ b/src/telegram.cpp
@@ -613,7 +613,17 @@ uint16_t TxService::read_next_tx(uint8_t offset) {
     if (telegram_last_->offset != offset) {
         return 0;
     }
-    add(Telegram::Operation::TX_READ, telegram_last_->dest, telegram_last_->type_id, telegram_last_->offset + 25, message_data, 1, 0, true);
+    
+    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
+        return 0;
+    }
+
+    add(Telegram::Operation::TX_READ, telegram_last_->dest, telegram_last_->type_id, telegram_last_->offset + add_offset, message_data, 1, 0, true);
     return telegram_last_->type_id;
 }