Index: /trunk/FACT++/gui/MainWindow.cc
===================================================================
--- /trunk/FACT++/gui/MainWindow.cc	(revision 11858)
+++ /trunk/FACT++/gui/MainWindow.cc	(revision 11859)
@@ -585,4 +585,19 @@
 }
 
+void MainWindow::on_fBiasRequestStatus_clicked()
+{
+    Dim::SendCommand("BIAS_CONTROL/REQUEST_STATUS");
+}
+
+void MainWindow::on_fBiasApplyReference_clicked()
+{
+    Dim::SendCommand("BIAS_CONTROL/APPLY_REFERENCE_VOLTAGE");
+}
+
+void MainWindow::on_fBiasSetToZero_clicked()
+{
+    Dim::SendCommand("BIAS_CONTROL/SET_GLOBAL_DAC", uint16_t(0));
+}
+
 void MainWindow::on_fBiasMin_valueChanged(int min)
 {
Index: /trunk/FACT++/gui/MainWindow.h
===================================================================
--- /trunk/FACT++/gui/MainWindow.h	(revision 11858)
+++ /trunk/FACT++/gui/MainWindow.h	(revision 11859)
@@ -168,4 +168,8 @@
     void on_fBiasMax_valueChanged(int); // FIXME: Could be set as slot in the designer
 
+    void on_fBiasRequestStatus_clicked();
+    void on_fBiasApplyReference_clicked();
+    void on_fBiasSetToZero_clicked();
+
     // Tab: Rates
     virtual void UpdateThresholdIdx() = 0;
Index: /trunk/FACT++/gui/design.ui
===================================================================
--- /trunk/FACT++/gui/design.ui	(revision 11858)
+++ /trunk/FACT++/gui/design.ui	(revision 11859)
@@ -3677,4 +3677,38 @@
                    </item>
                   </layout>
+                 </item>
+                 <item>
+                  <spacer name="verticalSpacer_67">
+                   <property name="orientation">
+                    <enum>Qt::Vertical</enum>
+                   </property>
+                   <property name="sizeHint" stdset="0">
+                    <size>
+                     <width>20</width>
+                     <height>40</height>
+                    </size>
+                   </property>
+                  </spacer>
+                 </item>
+                 <item>
+                  <widget class="QPushButton" name="fBiasSetToZero">
+                   <property name="text">
+                    <string>Set to 0</string>
+                   </property>
+                  </widget>
+                 </item>
+                 <item>
+                  <widget class="QPushButton" name="fBiasApplyReference">
+                   <property name="text">
+                    <string>Set Reference</string>
+                   </property>
+                  </widget>
+                 </item>
+                 <item>
+                  <widget class="QPushButton" name="fBiasRequestStatus">
+                   <property name="text">
+                    <string>Request Status</string>
+                   </property>
+                  </widget>
                  </item>
                  <item>