diff --git a/IR_Encoder.cpp b/IR_Encoder.cpp
index f8ab807..9393188 100644
--- a/IR_Encoder.cpp
+++ b/IR_Encoder.cpp
@@ -38,6 +38,8 @@ IR_Encoder::IR_Encoder(uint8_t pin, uint16_t addr, IR_DecoderRaw *decPair, bool
         last->next = this;
         }
         last = this;
+        
+        pinMode(pin, OUTPUT);
     }
 };
  
@@ -126,21 +128,21 @@ void IR_Encoder::setBlindDecoders(IR_DecoderRaw *decoders[], uint8_t count)
 
 IR_Encoder::~IR_Encoder(){};
 
-void IR_Encoder::sendData(uint16_t addrTo, uint8_t dataByte, bool needAccept)
+IR_SendResult IR_Encoder::sendData(uint16_t addrTo, uint8_t dataByte, bool needAccept)
 {
-    sendData(addrTo, &dataByte, 1, needAccept);
+    return sendData(addrTo, &dataByte, 1, needAccept);
 }
 
-void IR_Encoder::sendData(uint16_t addrTo, uint8_t *data, uint8_t len, bool needAccept){
-    sendDataFULL(id, addrTo, data, len, needAccept);
+IR_SendResult IR_Encoder::sendData(uint16_t addrTo, uint8_t *data, uint8_t len, bool needAccept){
+    return sendDataFULL(id, addrTo, data, len, needAccept);
 }
 
-void IR_Encoder::sendDataFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data, uint8_t len, bool needAccept)
+IR_SendResult IR_Encoder::sendDataFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data, uint8_t len, bool needAccept)
 {
     if (len > bytePerPack)
     {
         Serial.println("IR Pack to big");
-        return;
+        return IR_SendResult(false, 0);
     }
     constexpr uint8_t dataStart = msgBytes + addrBytes + addrBytes;
     memset(sendBuffer, 0x00, dataByteSizeMax);
@@ -191,10 +193,14 @@ void IR_Encoder::sendDataFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data,
 
     // отправка
     rawSend(sendBuffer, packSize);
+    
+    // Возвращаем результат отправки
+    uint32_t sendTime = calculateSendTime(packSize);
+    return IR_SendResult(true, sendTime);
 }
 
 
-void IR_Encoder::sendAccept(uint16_t addrTo, uint8_t customByte)
+IR_SendResult IR_Encoder::sendAccept(uint16_t addrTo, uint8_t customByte)
 {
     constexpr uint8_t packsize = msgBytes + addrBytes + 1U + crcBytes;
     memset(sendBuffer, 0x00, dataByteSizeMax);
@@ -215,9 +221,13 @@ void IR_Encoder::sendAccept(uint16_t addrTo, uint8_t customByte)
     sendBuffer[5] = crc8(sendBuffer, 0, 5, poly2) & 0xFF;
 
     rawSend(sendBuffer, packsize);
+    
+    // Возвращаем результат отправки
+    uint32_t sendTime = calculateSendTime(packsize);
+    return IR_SendResult(true, sendTime);
 }
 
-void IR_Encoder::sendRequest(uint16_t addrTo)
+IR_SendResult IR_Encoder::sendRequest(uint16_t addrTo)
 {
     constexpr uint8_t packsize = msgBytes + addrBytes + addrBytes + crcBytes;
     memset(sendBuffer, 0x00, dataByteSizeMax);
@@ -237,28 +247,32 @@ void IR_Encoder::sendRequest(uint16_t addrTo)
     sendBuffer[6] = crc8(sendBuffer, 0, 6, poly2) & 0xFF;
 
     rawSend(sendBuffer, packsize);
+    
+    // Возвращаем результат отправки
+    uint32_t sendTime = calculateSendTime(packsize);
+    return IR_SendResult(true, sendTime);
 }
 
-void IR_Encoder::sendBack(uint8_t data)
+IR_SendResult IR_Encoder::sendBack(uint8_t data)
 {
-    _sendBack(false, 0, &data, 1);
+    return _sendBack(false, 0, &data, 1);
 }
 
-void IR_Encoder::sendBack(uint8_t *data, uint8_t len)
+IR_SendResult IR_Encoder::sendBack(uint8_t *data, uint8_t len)
 {
-    _sendBack(false, 0, data, len);
+    return _sendBack(false, 0, data, len);
 }
 
-void IR_Encoder::sendBackTo(uint16_t addrTo, uint8_t *data, uint8_t len)
+IR_SendResult IR_Encoder::sendBackTo(uint16_t addrTo, uint8_t *data, uint8_t len)
 {
-    _sendBack(true, addrTo, data, len);
+    return _sendBack(true, addrTo, data, len);
 }
 
-void IR_Encoder::_sendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint8_t len)
+IR_SendResult IR_Encoder::_sendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint8_t len)
 {
     if (len > bytePerPack)
     {
-        return;
+        return IR_SendResult(false, 0);
     }
     memset(sendBuffer, 0x00, dataByteSizeMax);
     uint8_t dataStart = msgBytes + addrBytes + (isAdressed ? addrBytes : 0);
@@ -290,6 +304,10 @@ void IR_Encoder::_sendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint
 
     // отправка
     rawSend(sendBuffer, packSize);
+    
+    // Возвращаем результат отправки
+    uint32_t sendTime = calculateSendTime(packSize);
+    return IR_SendResult(true, sendTime);
 }
 
 void IR_Encoder::setDecoder_isSending()
@@ -314,6 +332,12 @@ void IR_Encoder::rawSend(uint8_t *ptr, uint8_t len)
         // TODO: Обработка повторной отправки
         return;
     }
+    
+    // Проверка на переполнение буфера
+    if (len > dataByteSizeMax)
+    {
+        return;
+    }
     // Serial.println("START");
     setDecoder_isSending();
 
@@ -498,6 +522,91 @@ uint8_t IR_Encoder::bitLow[2] = {
     (bitPauseTakts / 2 + bitActiveTakts) * 2 - 1,
     (bitPauseTakts)-1};
 
+uint32_t IR_Encoder::calculateSendTime(uint8_t packSize) const
+{
+    // Расчет времени отправки пакета в миллисекундах
+    
+    // Время преамбулы: preambPulse * 2 фронта * bitTakts тактов
+    uint32_t preambTime = preambPulse * 2 * bitTakts;
+    
+    // Время данных: количество бит * bitTakts тактов
+    uint32_t dataTime = packSize * 8 * bitTakts;
+    
+    // Время синхронизации: syncBits * 2 фронта * bitTakts тактов
+    uint32_t syncTime = syncBits * 2 * bitTakts;
+    
+    // Общее время в тактах
+    uint32_t totalTakts = preambTime + dataTime + syncTime;
+    
+    // Конвертируем в миллисекунды
+    // carrierPeriod - период несущей в микросекундах
+    // totalTakts * carrierPeriod / 1000 = время в миллисекундах
+    uint32_t sendTimeMs = (totalTakts * carrierPeriod) / 1000;
+    
+    return sendTimeMs;
+}
+
+// Функции для тестирования времени отправки без фактической отправки
+
+uint32_t IR_Encoder::testSendTime(uint16_t addrTo, uint8_t dataByte, bool needAccept) const
+{
+    return testSendTime(addrTo, &dataByte, 1, needAccept);
+}
+
+uint32_t IR_Encoder::testSendTime(uint16_t addrTo, uint8_t *data, uint8_t len, bool needAccept) const
+{
+    return testSendTimeFULL(id, addrTo, data, len, needAccept);
+}
+
+uint32_t IR_Encoder::testSendTimeFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data, uint8_t len, bool needAccept) const
+{
+    if (len > bytePerPack)
+    {
+        return 0; // Возвращаем 0 для недопустимого размера
+    }
+    
+    uint8_t packSize = msgBytes + addrBytes + addrBytes + len + crcBytes;
+    return calculateSendTime(packSize);
+}
+
+uint32_t IR_Encoder::testSendAccept(uint16_t addrTo, uint8_t customByte) const
+{
+    constexpr uint8_t packsize = msgBytes + addrBytes + 1U + crcBytes;
+    return calculateSendTime(packsize);
+}
+
+uint32_t IR_Encoder::testSendRequest(uint16_t addrTo) const
+{
+    constexpr uint8_t packsize = msgBytes + addrBytes + addrBytes + crcBytes;
+    return calculateSendTime(packsize);
+}
+
+uint32_t IR_Encoder::testSendBack(uint8_t data) const
+{
+    return testSendBack(false, 0, &data, 1);
+}
+
+uint32_t IR_Encoder::testSendBack(uint8_t *data, uint8_t len) const
+{
+    return testSendBack(false, 0, data, len);
+}
+
+uint32_t IR_Encoder::testSendBackTo(uint16_t addrTo, uint8_t *data, uint8_t len) const
+{
+    return testSendBack(true, addrTo, data, len);
+}
+
+uint32_t IR_Encoder::testSendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint8_t len) const
+{
+    if (len > bytePerPack)
+    {
+        return 0; // Возвращаем 0 для недопустимого размера
+    }
+    
+    uint8_t packSize = msgBytes + addrBytes + (isAdressed ? addrBytes : 0) + min(uint8_t(1), len) + crcBytes;
+    return calculateSendTime(packSize);
+}
+
 // uint8_t* IR_Encoder::bitHigh = new uint8_t[2]{
 //         (bitPauseTakts) * 2 - 0,
 //         (bitActiveTakts) * 2 - 0};
diff --git a/IR_Encoder.h b/IR_Encoder.h
index 8910c12..39b0334 100644
--- a/IR_Encoder.h
+++ b/IR_Encoder.h
@@ -3,6 +3,15 @@
 
 // TODO: Отложенная передача после завершения приема
 
+// Структура для возврата результата отправки
+struct IR_SendResult {
+    bool success;           // Флаг успешности отправки
+    uint32_t sendTimeMs;    // Время отправки пакета в миллисекундах
+    
+    IR_SendResult(bool success = false, uint32_t sendTimeMs = 0) 
+        : success(success), sendTimeMs(sendTimeMs) {}
+};
+
 class IR_DecoderRaw;
 class IR_Encoder : public IR_FOX
 {
@@ -30,17 +39,27 @@ public:
     void setBlindDecoders(IR_DecoderRaw *decoders[], uint8_t count);
     void rawSend(uint8_t *ptr, uint8_t len);
 
-    void sendData(uint16_t addrTo, uint8_t dataByte, bool needAccept = false);
-    void sendData(uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0, bool needAccept = false);
-    void sendDataFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0, bool needAccept = false);
+    IR_SendResult sendData(uint16_t addrTo, uint8_t dataByte, bool needAccept = false);
+    IR_SendResult sendData(uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0, bool needAccept = false);
+    IR_SendResult sendDataFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0, bool needAccept = false);
 
 
-    void sendAccept(uint16_t addrTo, uint8_t customByte = 0);
-    void sendRequest(uint16_t addrTo);
+    IR_SendResult sendAccept(uint16_t addrTo, uint8_t customByte = 0);
+    IR_SendResult sendRequest(uint16_t addrTo);
 
-    void sendBack(uint8_t data);
-    void sendBack(uint8_t *data = nullptr, uint8_t len = 0);
-    void sendBackTo(uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0);
+    IR_SendResult sendBack(uint8_t data);
+    IR_SendResult sendBack(uint8_t *data = nullptr, uint8_t len = 0);
+    IR_SendResult sendBackTo(uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0);
+
+    // Функция для тестирования времени отправки без фактической отправки
+    uint32_t testSendTime(uint16_t addrTo, uint8_t dataByte, bool needAccept = false) const;
+    uint32_t testSendTime(uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0, bool needAccept = false) const;
+    uint32_t testSendTimeFULL(uint16_t addrFrom, uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0, bool needAccept = false) const;
+    uint32_t testSendAccept(uint16_t addrTo, uint8_t customByte = 0) const;
+    uint32_t testSendRequest(uint16_t addrTo) const;
+    uint32_t testSendBack(uint8_t data) const;
+    uint32_t testSendBack(uint8_t *data = nullptr, uint8_t len = 0) const;
+    uint32_t testSendBackTo(uint16_t addrTo, uint8_t *data = nullptr, uint8_t len = 0) const;
 
     inline bool isBusy() const { return isSending;}
 
@@ -50,11 +69,13 @@ public:
 
     void _isr();
 private:
-    void _sendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint8_t len);
+    IR_SendResult _sendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint8_t len);
 
     void setDecoder_isSending();
     void sendByte(uint8_t byte, bool *prev, bool LOW_FIRST);
     void addSync(bool *prev, bool *next);
+    uint32_t calculateSendTime(uint8_t packSize) const;
+    uint32_t testSendBack(bool isAdressed, uint16_t addrTo, uint8_t *data, uint8_t len) const;
     void send_HIGH(bool = 1);
     void send_LOW();
     void send_EMPTY(uint8_t count);