diff --git a/docs/mi004700-i-e.pdf b/docs/mi004700-i-e.pdf
new file mode 100644
index 0000000..052ba0d
Binary files /dev/null and b/docs/mi004700-i-e.pdf differ
diff --git a/lib/ETH/ETH_Driver.h b/lib/ETH/ETH_Driver.h
index 17466f9..3aabc6e 100644
--- a/lib/ETH/ETH_Driver.h
+++ b/lib/ETH/ETH_Driver.h
@@ -24,7 +24,7 @@
 namespace drivers
 {
 
-    class Ethernet
+    class Ethernet : public ETHClass
     {
 
     public:
diff --git a/lib/I2C/I2C_Driver.cpp b/lib/I2C/I2C_Driver.cpp
index 3d76956..51c6cef 100644
--- a/lib/I2C/I2C_Driver.cpp
+++ b/lib/I2C/I2C_Driver.cpp
@@ -3,21 +3,20 @@
 namespace drivers
 {
 
-  I2C::I2C()
+  I2C::I2C(): m_initialized(true)
   {
     Wire.begin(I2C_SDA_PIN, I2C_SCL_PIN);
-    isInitialized = true;
   }
 
   I2C::~I2C()
   {
     Wire.end();
-    isInitialized = true;
+    m_initialized = false;
   }
 
   const bool I2C::read(const uint8_t deviceAddr, const uint8_t deviceReg, const uint8_t len, std::vector<uint8_t> &data)
   {
-    //busy.try_lock();
+    std::lock_guard<std::mutex> lock(m_mutex);
     Wire.beginTransmission(deviceAddr);
     Wire.write(deviceReg);
     switch (Wire.endTransmission(true))
@@ -45,13 +44,12 @@ namespace drivers
     {
       data[i] = static_cast<uint8_t>(Wire.read());
     }
-    //busy.unlock();
     return true;
   }
 
   const bool I2C::write(const uint8_t deviceAddr, const uint8_t deviceReg, const std::vector<uint8_t> &data)
   {
-    //busy.lock();
+    std::lock_guard<std::mutex> lock(m_mutex);
     Wire.beginTransmission(deviceAddr);
     Wire.write(deviceReg);
     for (auto d : data)
@@ -73,7 +71,6 @@ namespace drivers
       LOG_ERROR("Unknown Error");
       return false;
     }
-    //busy.unlock();
     return true;
   }
 
diff --git a/lib/I2C/I2C_Driver.h b/lib/I2C/I2C_Driver.h
index ba2db68..55210ce 100644
--- a/lib/I2C/I2C_Driver.h
+++ b/lib/I2C/I2C_Driver.h
@@ -14,16 +14,16 @@ namespace drivers
 
     class I2C
     {
-    private:
-        bool isInitialized = false;
-        //std::mutex busy;
-
     public:
         I2C(void);
         ~I2C(void);
 
         const bool read(const uint8_t deviceAddr, const uint8_t deviceReg, const uint8_t len, std::vector<uint8_t> &data);
         const bool write(const uint8_t deviceAddr, const uint8_t deviceReg, const std::vector<uint8_t> &data);
+
+    private:
+        bool m_initialized;
+        std::mutex m_mutex;
     };
 
 }
diff --git a/lib/RS485/RS485_Driver.cpp b/lib/RS485/RS485_Driver.cpp
index 36793c9..a53bfd2 100644
--- a/lib/RS485/RS485_Driver.cpp
+++ b/lib/RS485/RS485_Driver.cpp
@@ -71,6 +71,7 @@ namespace drivers
   const bool MODBUS::readCoils(const uint8_t device, const uint16_t reg, const uint16_t num, std::vector<bool> &coils)
   {
     constexpr uint8_t func = 0x01;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Read coils: dev[", device, "], reg[", reg, "], num[", num, "]");
     return readBinary(device, func, reg, num, coils);
   }
@@ -79,6 +80,7 @@ namespace drivers
   const bool MODBUS::readInputs(const uint8_t device, const uint16_t reg, const uint8_t num, std::vector<bool> &inputs)
   {
     constexpr uint8_t func = 0x02;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Read multi inputs: dev[", device, "], reg[", reg, "], num[", num, "]");
     return readBinary(device, func, reg, num, inputs);
   }
@@ -87,6 +89,7 @@ namespace drivers
   const bool MODBUS::readHoldingRegisters(const uint8_t device, const uint16_t reg, const uint8_t num, std::vector<uint16_t> &values)
   {
     constexpr uint8_t func = 0x03;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Read multi holding registers: dev[", device, "], reg[", reg, "], num[", num, "]");
     return readInteger(device, func, reg, num, values);
   }
@@ -95,6 +98,7 @@ namespace drivers
   const bool MODBUS::readInputRegisters(const uint8_t device, const uint16_t reg, const uint8_t num, std::vector<uint16_t> &values)
   {
     constexpr uint8_t func = 0x04;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Read multi input registers: dev[", device, "], reg[", reg, "], num[", num, "]");
     return readInteger(device, func, reg, num, values);
   }
@@ -103,6 +107,7 @@ namespace drivers
   const bool MODBUS::writeCoil(const uint8_t device, const uint16_t coil, const bool value)
   {
     constexpr uint8_t func = 0x05;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Write single coil: dev[", device, "], coil[", coil, "], value[", value ? "true" : "false", "]");
     return writeBinary(device, func, coil, {value});
   }
@@ -111,6 +116,7 @@ namespace drivers
   const bool MODBUS::writeRegister(const uint8_t device, const uint16_t reg, const uint16_t value)
   {
     constexpr uint8_t func = 0x06;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Write single register: dev[", device, "], reg[", reg, "], value[", value, "]");
     return writeInteger(device, func, reg, {value}, false);
   }
@@ -119,6 +125,7 @@ namespace drivers
   const bool MODBUS::writeCoils(const uint8_t device, const uint16_t coils, const std::vector<bool> &values)
   {
     constexpr uint8_t func = 0x0F;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Write multi coils: dev[", device, "], start[", coils, "], num[", values.size(), "]");
     return writeBinary(device, func, coils, values);
   }
@@ -127,6 +134,7 @@ namespace drivers
   const bool MODBUS::writeRegisters(const uint8_t device, const uint16_t reg, const std::vector<uint16_t> &values)
   {
     constexpr uint8_t func = 0x10;
+    std::lock_guard<std::mutex> lock(m_mutex);
     LOG_DEBUG("Write multi registers: dev[", device, "], start[", reg, "], num[", values.size(), "]");
     return writeInteger(device, func, reg, values, true);
   }
diff --git a/lib/RS485/RS485_Driver.h b/lib/RS485/RS485_Driver.h
index 32d6f45..f581e92 100644
--- a/lib/RS485/RS485_Driver.h
+++ b/lib/RS485/RS485_Driver.h
@@ -7,6 +7,7 @@
 #include <HardwareSerial.h> // Reference the ESP32 built-in serial port library
 #include <CRC16.h>
 #include <memory>
+#include <mutex>
 
 namespace drivers
 {
@@ -80,6 +81,7 @@ namespace drivers
 
     private:
         CRC16 m_crc;
+        std::mutex m_mutex;
         const std::vector<uint8_t> singleRequest(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t data);
         const std::vector<uint8_t> multiRequest(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t qty, const std::vector<uint8_t> &data);
         const bool readBinary(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t bits, std::vector<bool> &out);
diff --git a/src/main.cpp b/src/main.cpp
index 02bcc3e..2b99750 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -24,11 +24,14 @@ void callback(char *topic, uint8_t *payload, unsigned int length)
 
 void myTask(void *mqtt)
 {
-  while (true)
+  auto client = (PubSubClient *)(mqtt);
+  while (client->connected())
   {
-    ((PubSubClient *)(mqtt))->loop();
+    client->loop();
     vTaskDelay(pdMS_TO_TICKS(100));
   }
+  LOG_ERROR("Mqtt Loop Ended, client disconnected");
+  vTaskDelete(NULL); // delete the current task
 };
 
 /////////////// GLOBALS ///////////////
@@ -42,7 +45,7 @@ void loop()
 {
   const uint8_t tempBoardAddr(0xAA);
   const uint8_t relayBoardAddr(0x01);
-  const uint8_t senecadAddr(0xBB);
+  const uint8_t senecaMeterAddr(0xBB);
   const uint8_t baseRegister(0x00);
   uint16_t k(0);
   uint8_t ethRetries(0);
@@ -58,7 +61,7 @@ void loop()
   delay(100);
   auto io = digitalIO(i2c, bus, {relayBoardAddr});
   delay(100);
-  auto seneca = drivers::S50140(bus, senecadAddr);
+  auto seneca = drivers::S50140(bus, senecaMeterAddr);
 
   Network.onEvent([&eth](arduino_event_id_t event, arduino_event_info_t info)
                   { eth.onEvent(event, info); });