diff --git a/libnymea-core/modbus/modbusrtumanager.cpp b/libnymea-core/modbus/modbusrtumanager.cpp
index f6101364..241f2e3c 100644
--- a/libnymea-core/modbus/modbusrtumanager.cpp
+++ b/libnymea-core/modbus/modbusrtumanager.cpp
@@ -40,13 +40,35 @@ namespace nymeaserver {
 
 ModbusRtuManager::ModbusRtuManager(QObject *parent) : QObject(parent)
 {
+    // Load available serial ports
+    updateSerialPorts();
+
     // Load uart configurations
     loadRtuMasters();
 
-    // Connect signals
-
     // Enable autoconnect for each modbus rtu master
+    m_timer = new QTimer(this);
+    m_timer->setInterval(5000);
+    m_timer->setSingleShot(false);
+    connect(m_timer, &QTimer::timeout, this, [=](){
+        // Update serial port list
+        updateSerialPorts();
 
+        // Check if we have to reconnect a device
+        foreach (ModbusRtuMaster *modbusMaster, m_modbusRtuMasters.values()) {
+            ModbusRtuMasterImpl *modbusMasterImpl = qobject_cast<ModbusRtuMasterImpl *>(modbusMaster);
+
+            if (!modbusMasterImpl->connected()) {
+                if (!modbusMasterImpl->connectDevice()) {
+                    qCDebug(dcModbusRtu()) << "Reconnect" << modbusMaster << "failed.";
+                } else {
+                    qCDebug(dcModbusRtu()) << "Reconnected" << modbusMaster << "sucessfully.";
+                }
+            }
+        }
+    });
+
+    m_timer->start();
 }
 
 QList<ModbusRtuMaster *> ModbusRtuManager::modbusRtuMasters() const
@@ -68,6 +90,79 @@ ModbusRtuMaster *ModbusRtuManager::getModbusRtuMaster(const QUuid &modbusUuid)
     return nullptr;
 }
 
+QPair<ModbusRtuManager::Error, QUuid>  ModbusRtuManager::addNewModbusRtuMaster(const QString &serialPort, qint32 baudrate, QSerialPort::Parity parity, QSerialPort::DataBits dataBits, QSerialPort::StopBits stopBits)
+{
+    // Check if the serial port exists
+
+    // Check if the serial port is not occupied
+
+    QUuid modbusUuid = QUuid::createUuid();
+    ModbusRtuMasterImpl *modbusMaster = new ModbusRtuMasterImpl(modbusUuid, serialPort, baudrate, parity, dataBits, stopBits, this);
+    ModbusRtuMaster *modbus = qobject_cast<ModbusRtuMaster *>(modbusMaster);
+    qCDebug(dcModbusRtu()) << "Adding new" << qobject_cast<ModbusRtuMaster *>(modbusMaster) << parity << dataBits << stopBits;
+
+    // Connect the modbus master bus;
+    m_modbusRtuMasters.insert(modbusUuid, modbus);
+    emit modbusRtuMasterAdded(modbus);
+    saveModbusRtuMaster(modbus);
+
+    return QPair<Error, QUuid>(ErrorNoError, modbusUuid);
+}
+
+ModbusRtuManager::Error ModbusRtuManager::reconfigureRtuMaster(const QUuid &modbusUuid, const QString &serialPort, qint32 baudrate, QSerialPort::Parity parity, QSerialPort::DataBits dataBits, QSerialPort::StopBits stopBits)
+{
+    if (!m_modbusRtuMasters.contains(modbusUuid)) {
+        qCWarning(dcModbusRtu()) << "Could not reconfigure modbus RTU master because no resource could be found with uuid" << modbusUuid.toString();
+        return ErrorNotFound;
+    }
+
+    ModbusRtuMasterImpl *modbusMaster = qobject_cast<ModbusRtuMasterImpl *>(m_modbusRtuMasters.value(modbusUuid));
+
+    // Disconnect
+    modbusMaster->disconnectDevice();
+
+    // Reconfigure
+    modbusMaster->setSerialPort(serialPort);
+    modbusMaster->setBaudrate(baudrate);
+    modbusMaster->setParity(parity);
+    modbusMaster->setDataBits(dataBits);
+    modbusMaster->setStopBits(stopBits);
+
+    // Connect again
+    if (!modbusMaster->connectDevice()) {
+        qCWarning(dcModbusRtu()) << "Failed to connect to" << m_modbusRtuMasters.value(modbusUuid);
+        return ErrorConnectionFailed;
+    }
+
+    emit modbusRtuMasterChanged(m_modbusRtuMasters.value(modbusUuid));
+
+    qCDebug(dcModbusRtu()) << "Reconfigured successfully" << m_modbusRtuMasters.value(modbusUuid);
+    return ErrorNoError;
+}
+
+
+ModbusRtuManager::Error ModbusRtuManager::removeModbusRtuMaster(const QUuid &modbusUuid)
+{
+    ModbusRtuMasterImpl *modbusMaster = qobject_cast<ModbusRtuMasterImpl *>(m_modbusRtuMasters.value(modbusUuid));
+    if (!modbusMaster) {
+        qCWarning(dcModbusRtu()) << "Could not remove modbus RTU master because no resource could be found with uuid" << modbusUuid.toString();
+        return ErrorNotFound;
+    }
+
+    qCDebug(dcModbusRtu()) << "Removing modbus RTU master" << qobject_cast<ModbusRtuMaster *>(modbusMaster);
+    emit modbusRtuMasterRemoved(modbusMaster);
+
+    modbusMaster->deleteLater();
+    return ErrorNoError;
+}
+
+void ModbusRtuManager::updateSerialPorts()
+{
+    // Check if serial port added or removed
+
+}
+
+
 void ModbusRtuManager::loadRtuMasters()
 {
     NymeaSettings settings(NymeaSettings::SettingsRoleModbusRtu);
@@ -87,7 +182,7 @@ void ModbusRtuManager::loadRtuMasters()
         ModbusRtuMaster *modbusRtuMaster = qobject_cast<ModbusRtuMaster *>(modbus);
         qCDebug(dcModbusRtu()) << "Loaded" << modbusRtuMaster;
         m_modbusRtuMasters.insert(modbusRtuMaster->modbusUuid(), modbusRtuMaster);
-        emit modbusRtuMasterAdded(modbusRtuMaster->modbusUuid());
+        emit modbusRtuMasterAdded(modbusRtuMaster);
     }
 
     settings.endGroup(); // ModbusRtuMasters
diff --git a/libnymea-core/modbus/modbusrtumanager.h b/libnymea-core/modbus/modbusrtumanager.h
index 0ee8ca82..fc01aa32 100644
--- a/libnymea-core/modbus/modbusrtumanager.h
+++ b/libnymea-core/modbus/modbusrtumanager.h
@@ -34,6 +34,7 @@
 #include <QHash>
 #include <QUuid>
 #include <QObject>
+#include <QTimer>
 
 #include "hardware/modbus/modbusrtumaster.h"
 
@@ -43,6 +44,13 @@ class ModbusRtuManager : public QObject
 {
     Q_OBJECT
 public:
+    enum Error {
+        ErrorNoError,
+        ErrorNotFound,
+        ErrorConnectionFailed
+    };
+    Q_ENUM(Error)
+
     explicit ModbusRtuManager(QObject *parent = nullptr);
     ~ModbusRtuManager() = default;
 
@@ -50,10 +58,14 @@ public:
     bool hasModbusRtuMaster(const QUuid &modbusUuid) const;
     ModbusRtuMaster *getModbusRtuMaster(const QUuid &modbusUuid);
 
+    QPair<Error, QUuid> addNewModbusRtuMaster(const QString &serialPort, qint32 baudrate, QSerialPort::Parity parity, QSerialPort::DataBits dataBits, QSerialPort::StopBits stopBits);
+    Error reconfigureRtuMaster(const QUuid &modbusUuid, const QString &serialPort, qint32 baudrate, QSerialPort::Parity parity, QSerialPort::DataBits dataBits, QSerialPort::StopBits stopBits);
+    Error removeModbusRtuMaster(const QUuid &modbusUuid);
+
 signals:
-    void modbusRtuMasterAdded(const QUuid &modbusUuid);
-    void modbusRtuMasterRemoved(const QUuid &modbusUuid);
-    void modbusRtuMasterChanged(const QUuid &modbusUuid);
+    void modbusRtuMasterAdded(ModbusRtuMaster *modbusRtuMaster);
+    void modbusRtuMasterRemoved(ModbusRtuMaster *modbusRtuMaster);
+    void modbusRtuMasterChanged(ModbusRtuMaster *modbusRtuMaster);
 
 private:
     QHash<QUuid, ModbusRtuMaster *> m_modbusRtuMasters;
diff --git a/libnymea-core/modbus/modbusrtumasterimpl.cpp b/libnymea-core/modbus/modbusrtumasterimpl.cpp
index 14be6556..de13800b 100644
--- a/libnymea-core/modbus/modbusrtumasterimpl.cpp
+++ b/libnymea-core/modbus/modbusrtumasterimpl.cpp
@@ -85,31 +85,91 @@ QString ModbusRtuMasterImpl::serialPort() const
     return m_serialPort;
 }
 
+void ModbusRtuMasterImpl::setSerialPort(const QString &serialPort)
+{
+    if (m_serialPort == serialPort)
+        return;
+
+    m_serialPort = serialPort;
+    emit serialPortChanged(m_serialPort);
+}
+
 qint32 ModbusRtuMasterImpl::baudrate() const
 {
     return m_baudrate;
 }
 
+void ModbusRtuMasterImpl::setBaudrate(qint32 baudrate)
+{
+    if (m_baudrate == baudrate)
+        return;
+
+    m_baudrate = baudrate;
+    emit baudrateChanged(m_baudrate);
+}
+
 QSerialPort::Parity ModbusRtuMasterImpl::parity() const
 {
     return m_parity;
 }
 
+void ModbusRtuMasterImpl::setParity(QSerialPort::Parity parity)
+{
+    if (m_parity == parity)
+        return;
+
+    m_parity = parity;
+    emit parityChanged(m_parity);
+}
+
 QSerialPort::DataBits ModbusRtuMasterImpl::dataBits() const
 {
     return m_dataBits;
 }
 
+void ModbusRtuMasterImpl::setDataBits(QSerialPort::DataBits dataBits)
+{
+    if (m_dataBits == dataBits)
+        return;
+
+    m_dataBits = dataBits;
+    emit dataBitsChanged(m_dataBits);
+}
+
 QSerialPort::StopBits ModbusRtuMasterImpl::stopBits()
 {
     return m_stopBits;
 }
 
+void ModbusRtuMasterImpl::setStopBits(QSerialPort::StopBits stopBits)
+{
+    if (m_stopBits == stopBits)
+        return;
+
+    m_stopBits = stopBits;
+    emit stopBitsChanged(m_stopBits);
+}
+
 bool ModbusRtuMasterImpl::connected() const
 {
     return m_connected;
 }
 
+bool ModbusRtuMasterImpl::connectDevice()
+{
+    m_modbus->setConnectionParameter(QModbusDevice::SerialPortNameParameter, m_serialPort);
+    m_modbus->setConnectionParameter(QModbusDevice::SerialBaudRateParameter, m_baudrate);
+    m_modbus->setConnectionParameter(QModbusDevice::SerialDataBitsParameter, m_dataBits);
+    m_modbus->setConnectionParameter(QModbusDevice::SerialStopBitsParameter, m_stopBits);
+    m_modbus->setConnectionParameter(QModbusDevice::SerialParityParameter, m_parity);
+    return m_modbus->connectDevice();
+}
+
+void ModbusRtuMasterImpl::disconnectDevice()
+{
+    m_modbus->disconnectDevice();
+}
+
 ModbusRtuReply *ModbusRtuMasterImpl::readCoil(int slaveAddress, int registerAddress, quint16 size)
 {
 #ifdef WITH_QTSERIALBUS
diff --git a/libnymea-core/modbus/modbusrtumasterimpl.h b/libnymea-core/modbus/modbusrtumasterimpl.h
index 15a99f52..d9eadd8c 100644
--- a/libnymea-core/modbus/modbusrtumasterimpl.h
+++ b/libnymea-core/modbus/modbusrtumasterimpl.h
@@ -50,14 +50,27 @@ public:
     ~ModbusRtuMasterImpl() override = default;
 
     QUuid modbusUuid() const override;
+
     QString serialPort() const override;
+    void setSerialPort(const QString &serialPort);
+
     qint32 baudrate() const override;
+    void setBaudrate(qint32 baudrate);
+
     QSerialPort::Parity parity() const override;
+    void setParity(QSerialPort::Parity parity);
+
     QSerialPort::DataBits dataBits() const override;
+    void setDataBits(QSerialPort::DataBits dataBits);
+
     QSerialPort::StopBits stopBits() override;
+    void setStopBits(QSerialPort::StopBits stopBits);
 
     bool connected() const override;
 
+    bool connectDevice();
+    void disconnectDevice();
+
     // Requests
     ModbusRtuReply *readCoil(int slaveAddress, int registerAddress, quint16 size = 1) override;
     ModbusRtuReply *readDiscreteInput(int slaveAddress, int registerAddress, quint16 size = 1) override;
diff --git a/libnymea/hardware/modbus/modbusrtumaster.h b/libnymea/hardware/modbus/modbusrtumaster.h
index a8caf09c..4d6740a5 100644
--- a/libnymea/hardware/modbus/modbusrtumaster.h
+++ b/libnymea/hardware/modbus/modbusrtumaster.h
@@ -67,6 +67,11 @@ protected:
 
 signals:
     void connectedChanged(bool connected);
+    void serialPortChanged(const QString &serialPort);
+    void baudrateChanged(quint32 baudrate);
+    void parityChanged(QSerialPort::Parity parity);
+    void dataBitsChanged(QSerialPort::DataBits dataBits);
+    void stopBitsChanged(QSerialPort::StopBits stopBits);
 
 };