diff --git a/ChangeLog b/ChangeLog
index 60257baa..d0c22189 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16014,3 +16014,6 @@
 2017-09-01 Fred Gleason <fredg@paravelsystems.com>
 	* Renamed 'Origin' field to 'Ingest' in the 'Cut Info/Record' dialog
 	in RDLibrary.
+2017-09-02 Fred Gleason <fredg@paravelsystems.com>
+	* Implemented a driver for the Broadcast Tools Universal 4.1 MLR>>Web
+	switcher.
diff --git a/docs/SWITCHERS.txt b/docs/SWITCHERS.txt
index 1ec90354..b76f2fd7 100644
--- a/docs/SWITCHERS.txt
+++ b/docs/SWITCHERS.txt
@@ -18,6 +18,7 @@ Broadcast Tools SS 4.2 Audio Switcher
 Broadcast Tools SS 4.4 Audio Switcher
 Broadcast Tools ACS 8.2 Audio Control Switcher
 Broadcast Tools SS 8.2 Audio Switcher
+Broadcast Tools Universal 4.1MLR>>Web
 Harlond Virtual Mixer
 Kernel GPIO
 LiveWire LWRP Audio
@@ -438,6 +439,20 @@ Tools documentation), then you will also need to be sure that DIP
 switch SW-14-10 is ON.
 
 
+----------------------------------------------------------------------------
+BROADCAST TOOLS UNIVERSAL 4.1MLR>>WEB
+
+Driver Name: BroadcastTools 4.1 MLR>>Web
+
+Supported RML Commands:
+  GPI Enable ('GE')
+  GPI Set ('GI')
+  Switch Take ('ST')
+
+Control is by means of a TCP/IP connection to port 56. In 'Email/Network
+Setup' on the web configuration page, both the 'TCP Enabled' and 'PIP Mode
+Enabled' controls must be set to 'Enabled'.
+
 ----------------------------------------------------------------------------
 Harlond Virtual Mixer
 
diff --git a/lib/rdmatrix.cpp b/lib/rdmatrix.cpp
index 912071f8..61943747 100644
--- a/lib/rdmatrix.cpp
+++ b/lib/rdmatrix.cpp
@@ -70,7 +70,8 @@ bool __mx_primary_controls[RDMatrix::LastType][RDMatrix::LastControl]=
     {0,0,1,1,0,0,0,0,0,0,0,0,0,1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0},  // Modbus
     {0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0},  // Kernel GPIO
     {0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0},  // WheatNet SLIO
-    {0,0,1,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0}   // WheatNet LIO
+    {0,0,1,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0},  // WheatNet LIO
+    {0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0}   // BT Universale 4.1 MLR>>Web
   };
 bool __mx_backup_controls[RDMatrix::LastType][RDMatrix::LastControl]=
   {
@@ -117,7 +118,8 @@ bool __mx_backup_controls[RDMatrix::LastType][RDMatrix::LastControl]=
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},  // Modbus
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},  // Kernel GPIO
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},  // WheatNet SLIO
-    {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}   // WheatNet LIO
+    {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},  // WheatNet LIO
+    {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}   // BT Universal 4.1 MLR>>Web
   };
 
 int __mx_default_values[RDMatrix::LastType][RDMatrix::LastControl]=
@@ -165,7 +167,8 @@ int __mx_default_values[RDMatrix::LastType][RDMatrix::LastControl]=
     {1,0,0,502,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0}, // Modbus
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0},  // Kernel GPIO
     {1,0,0,55776,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0},  // WheatNet SLIO
-    {1,0,0,55776,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0}   // WheatNet LIO
+    {1,0,0,55776,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0},  // WheatNet LIO
+    {1,0,0,56,0,0,0,0,0,0,0,4,1,5,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0}   // BT Universal 4.1 MLR>>Web
   };
 
 RDMatrix::RDMatrix(const QString &station,int matrix)
@@ -745,6 +748,10 @@ QString RDMatrix::typeString(RDMatrix::Type type)
 	return QString("WheatNet LIO");
 	break;
 
+      case RDMatrix::BtU41MlrWeb:
+	return QString("BroadcastTools 4.1 MLR>>Web");
+	break;
+
       default:
 	return QString("Unknown Type");
 	break;
diff --git a/lib/rdmatrix.h b/lib/rdmatrix.h
index c16a408b..3641d2dd 100644
--- a/lib/rdmatrix.h
+++ b/lib/rdmatrix.h
@@ -39,7 +39,7 @@ class RDMatrix
 	     LiveWireLwrpGpio=29,BtSentinel4Web=30,BtGpi16=31,ModemLines=32,
 	     SoftwareAuthority=33,Sas16000=34,RossNkScp=35,BtAdms4422=36,
 	     BtSs41Mlr=37,Modbus=38,KernelGpio=39,WheatnetSlio=40,
-	     WheatnetLio=41,LastType=42};
+	     WheatnetLio=41,BtU41MlrWeb=42,LastType=43};
   enum Endpoint {Input=0,Output=1};
   enum Mode {Stereo=0,Left=1,Right=2};
   enum VguestAttribute {VguestEngine=0,VguestDevice=1,VguestSurface=2,
diff --git a/ripcd/Makefile.am b/ripcd/Makefile.am
index a4affe95..0353209d 100644
--- a/ripcd/Makefile.am
+++ b/ripcd/Makefile.am
@@ -49,6 +49,7 @@ dist_ripcd_SOURCES = acu1p.cpp acu1p.h\
                      btss82.cpp btss82.h\
                      btsrc16.cpp btsrc16.h\
                      btsrc8iii.cpp btsrc8iii.h\
+                     btu41mlrweb.cpp btu41mlrweb.h\
                      harlond.cpp harlond.h\
                      kernelgpio.cpp kernelgpio.h\
                      livewire_lwrpaudio.cpp livewire_lwrpaudio.h\
@@ -98,6 +99,7 @@ nodist_ripcd_SOURCES = moc_am16.cpp\
                        moc_btss42.cpp\
                        moc_btss44.cpp\
                        moc_btss82.cpp\
+                       moc_btu41mlrweb.cpp\
                        moc_harlond.cpp\
                        moc_kernelgpio.cpp\
                        moc_livewire_lwrpaudio.cpp\
diff --git a/ripcd/btu41mlrweb.cpp b/ripcd/btu41mlrweb.cpp
new file mode 100644
index 00000000..2f6a5f19
--- /dev/null
+++ b/ripcd/btu41mlrweb.cpp
@@ -0,0 +1,201 @@
+// btu41mlrweb.cpp
+//
+// Rivendell switcher driver for the BroadcastTools Universal 4.1 MLR>>Web
+//
+//   (C) Copyright 2017 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License version 2 as
+//   published by the Free Software Foundation.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public
+//   License along with this program; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#include <syslog.h>
+
+#include "btu41mlrweb.h"
+
+BtU41MlrWeb::BtU41MlrWeb(RDMatrix *matrix,QObject *parent)
+  : Switcher(matrix,parent)
+{
+  bt_watchdog_active=false;
+
+  bt_ip_address=matrix->ipAddress(RDMatrix::Primary);
+  bt_ip_port=matrix->ipPort(RDMatrix::Primary);
+
+  for(int i=0;i<BTU41MLRWEB_GPI_QUAN;i++) {
+    bt_gpi_states[i]=false;
+  }
+
+  bt_socket=new QSocket(this);
+  connect(bt_socket,SIGNAL(connected()),this,SLOT(connectedData()));
+  connect(bt_socket,SIGNAL(readyRead()),this,SLOT(readyReadData()));
+  connect(bt_socket,SIGNAL(error(int)),this,SLOT(errorData(int)));
+  bt_socket->connectToHost(bt_ip_address.toString(),bt_ip_port);
+
+  bt_keepalive_timer=new QTimer(this);
+  connect(bt_keepalive_timer,SIGNAL(timeout()),this,SLOT(keepaliveData()));
+
+  bt_watchdog_timer=new QTimer(this);
+  connect(bt_watchdog_timer,SIGNAL(timeout()),this,SLOT(watchdogData()));
+}
+
+
+BtU41MlrWeb::~BtU41MlrWeb()
+{
+  delete bt_watchdog_timer;
+  delete bt_keepalive_timer;
+  delete bt_socket;
+}
+
+
+RDMatrix::Type BtU41MlrWeb::type()
+{
+  return RDMatrix::BtU41MlrWeb;
+}
+
+
+unsigned BtU41MlrWeb::gpiQuantity()
+{
+  return BTU41MLRWEB_GPI_QUAN;
+}
+
+
+unsigned BtU41MlrWeb::gpoQuantity()
+{
+  return BTU41MLRWEB_GPO_QUAN;
+}
+
+
+bool BtU41MlrWeb::primaryTtyActive()
+{
+  return false;
+}
+
+
+bool BtU41MlrWeb::secondaryTtyActive()
+{
+  return false;
+}
+
+
+void BtU41MlrWeb::processCommand(RDMacro *cmd)
+{
+  switch(cmd->command()) {
+  case RDMacro::ST:
+    if((cmd->arg(1).toInt()<0)||(cmd->arg(1).toInt()>BTU41MLRWEB_INPUT_QUAN)||
+       (cmd->arg(2).toInt()<1)||(cmd->arg(2).toInt()>2)) {
+      cmd->acknowledge(false);
+      emit rmlEcho(cmd);
+      return;
+    }
+    if(cmd->arg(1).toInt()==0) {
+      SendCommand("*0MA");
+    }
+    else {
+      SendCommand(QString().sprintf("*0%02d",cmd->arg(1).toInt()));
+    }
+    break;
+
+  default:
+    break;
+  }
+}
+
+
+void BtU41MlrWeb::connectedData()
+{
+  syslog(LOG_INFO,
+	 "connection to BroadcastTools device at %s:%u established",
+	 (const char *)bt_ip_address.toString(),0xffff&bt_ip_port);
+  bt_watchdog_active=false;
+  SendCommand("*0SPA");
+  bt_keepalive_timer->start(BTU41MLRWEB_KEEPALIVE_INTERVAL);
+  bt_watchdog_timer->start(BTU41MLRWEB_WATCHDOG_INTERVAL);
+}
+
+
+void BtU41MlrWeb::readyReadData()
+{
+  char data[1501];
+  int n=0;
+
+  while((n=bt_socket->readBlock(data,1500))>0) {
+    data[n]=0;
+    for(int i=0;i<n;i++) {
+      switch(0xff&data[i]) {
+      case 13:
+	break;
+
+      case 10:
+	ProcessCommand(bt_accum);
+	bt_accum="";
+	break;
+
+      default:
+	bt_accum+=data[i];
+	break;
+      }
+    }
+  }
+}
+
+
+void BtU41MlrWeb::errorData(int err)
+{
+  watchdogData();
+}
+
+void BtU41MlrWeb::keepaliveData()
+{
+  SendCommand("*0SL");
+}
+
+
+void BtU41MlrWeb::watchdogData()
+{
+  if(!bt_watchdog_active) {
+    syslog(LOG_WARNING,
+	   "connection to BroadcastTools device at %s:%u lost, attempting reconnect",
+	   (const char *)bt_ip_address.toString(),0xffff&bt_ip_port);
+    bt_keepalive_timer->stop();
+    bt_watchdog_active=true;
+  }
+  bt_socket->close();
+  bt_socket->connectToHost(bt_ip_address.toString(),bt_ip_port);
+}
+
+
+void BtU41MlrWeb::ProcessCommand(const QString &cmd)
+{
+  //  syslog(LOG_NOTICE,"ProcessCommand(%s)\n",(const char *)cmd);
+
+  QStringList cmds=cmds.split(",",cmd);
+
+  if((cmds.size()==7)&&(cmds[0]=="S0P")) {
+    for(int i=0;i<BTU41MLRWEB_GPI_QUAN;i++) {
+      if(bt_gpi_states[i]!=(cmds[i+2]=="1")) {
+	bt_gpi_states[i]=cmds[i+2]=="1";
+	emit gpiChanged(matrixNumber(),i,bt_gpi_states[i]);
+      }
+    }
+  }
+
+  if((cmds.size()==5)&&(cmds[0]=="S0L")) {
+    bt_watchdog_timer->stop();
+    bt_watchdog_timer->start(BTU41MLRWEB_WATCHDOG_INTERVAL);
+  }
+}
+
+
+void BtU41MlrWeb::SendCommand(const QString &cmd)
+{
+  bt_socket->writeBlock(cmd,cmd.length());
+}
diff --git a/ripcd/btu41mlrweb.h b/ripcd/btu41mlrweb.h
new file mode 100644
index 00000000..8e464eb2
--- /dev/null
+++ b/ripcd/btu41mlrweb.h
@@ -0,0 +1,77 @@
+// btu41mlrweb.h
+//
+// Rivendell switcher driver for the BroadcastTools Universal 4.1 MLR>>Web
+//
+//   (C) Copyright 2017 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License version 2 as
+//   published by the Free Software Foundation.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public
+//   License along with this program; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#ifndef BTU41MLRWEB_H
+#define BTU41MLRWEB_H
+
+#include <vector>
+
+#include <qsignalmapper.h>
+#include <qsocket.h>
+#include <qtimer.h>
+
+#include <rd.h>
+#include <rdmatrix.h>
+#include <rdmacro.h>
+
+#include <switcher.h>
+
+#define BTU41MLRWEB_INPUT_QUAN 4
+#define BTU41MLRWEB_OUTPUT_QUAN 1
+#define BTU41MLRWEB_GPI_QUAN 5
+#define BTU41MLRWEB_GPO_QUAN 0
+#define BTU41MLRWEB_KEEPALIVE_INTERVAL 2000
+#define BTU41MLRWEB_WATCHDOG_INTERVAL 5000
+
+class BtU41MlrWeb : public Switcher
+{
+ Q_OBJECT
+ public:
+  BtU41MlrWeb(RDMatrix *matrix,QObject *parent=0);
+  ~BtU41MlrWeb();
+  RDMatrix::Type type();
+  unsigned gpiQuantity();
+  unsigned gpoQuantity();
+  bool primaryTtyActive();
+  bool secondaryTtyActive();
+  void processCommand(RDMacro *cmd);
+
+ private slots:
+  void connectedData();
+  void readyReadData();
+  void errorData(int err);
+  void keepaliveData();
+  void watchdogData();
+
+ private:
+  void ProcessCommand(const QString &cmd);
+  void SendCommand(const QString &cmd);
+  QSocket *bt_socket;
+  QTimer *bt_watchdog_timer;
+  bool bt_watchdog_active;
+  QHostAddress bt_ip_address;
+  uint16_t bt_ip_port;
+  QString bt_accum;
+  bool bt_gpi_states[BTU41MLRWEB_GPI_QUAN];
+  QTimer *bt_keepalive_timer;
+};
+
+
+#endif  // BTU41MLRWEB_H
diff --git a/ripcd/loaddrivers.cpp b/ripcd/loaddrivers.cpp
index 637d8105..084da9f2 100644
--- a/ripcd/loaddrivers.cpp
+++ b/ripcd/loaddrivers.cpp
@@ -41,6 +41,7 @@
 #include <btss42.h>
 #include <btss44.h>
 #include <btss82.h>
+#include <btu41mlrweb.h>
 #include <harlond.h>
 #include <kernelgpio.h>
 #include <livewire_lwrpaudio.h>
@@ -141,6 +142,10 @@ bool MainObject::LoadSwitchDriver(int matrix_num)
     ripcd_switcher[matrix_num]=new BtSs82(matrix,this);
     break;
 
+  case RDMatrix::BtU41MlrWeb:
+    ripcd_switcher[matrix_num]=new BtU41MlrWeb(matrix,this);
+    break;
+
   case RDMatrix::Harlond:
     ripcd_switcher[matrix_num]=new Harlond(matrix,this);
     break;