diff --git a/radio/src/thirdparty/libopenui/src/expansion_panel.h b/radio/src/thirdparty/libopenui/src/expansion_panel.h
new file mode 100644
index 000000000..d44e798a5
--- /dev/null
+++ b/radio/src/thirdparty/libopenui/src/expansion_panel.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) OpenTX
+ *
+ * Source:
+ *  https://github.com/opentx/libopenui
+ *
+ * This file is a part of libopenui library.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ */
+
+#ifndef _EXPANSION_PANEL_H_
+#define _EXPANSION_PANEL_H_
+
+#include "form.h"
+
+class ExpansionPanel;
+
+class ExpansionPanelHeader: virtual public FormGroup {
+  public:
+    ExpansionPanelHeader(ExpansionPanel * parent);
+
+    void onEvent(event_t event) override;
+
+    bool onTouchEnd(coord_t, coord_t) override;
+};
+
+
+class ExpansionPanel: public FormGroup {
+  friend class ExpansionPanelHeader;
+
+  public:
+    ExpansionPanel(Window * parent, const rect_t & rect):
+      FormGroup(parent, rect, FORM_NO_BORDER | FORM_FORWARD_FOCUS)
+    {
+    }
+
+#if defined(DEBUG_WINDOWS)
+    std::string getName() override
+    {
+      return "ExpansionPanel()";
+    }
+#endif
+
+    void toggle()
+    {
+      open(!isOpen);
+    }
+
+    void open(bool state = true)
+    {
+      isOpen = state;
+      coord_t newHeight = (state ? header->height() + body->height() : header->height());
+      parent->moveWindowsTop(bottom(), newHeight - height());
+      setHeight(newHeight);
+    }
+
+    void setFocus(uint8_t flag) override
+    {
+      if (!isOpen)
+        header->setFocus(flag);
+      else
+        FormGroup::setFocus(flag);
+    }
+
+    FormGroup * body = nullptr;
+
+  protected:
+    Window * header = nullptr;
+    bool isOpen = false;
+};
+
+ExpansionPanelHeader::ExpansionPanelHeader(ExpansionPanel * parent):
+  FormGroup(parent, {0, 0, parent->width(), parent->height()}, FORWARD_SCROLL)
+{
+}
+
+bool ExpansionPanelHeader::onTouchEnd(coord_t, coord_t)
+{
+  static_cast<ExpansionPanel *>(parent)->toggle();
+  setFocus();
+  return true;
+}
+
+void ExpansionPanelHeader::onEvent(event_t event)
+{
+  ExpansionPanel * panel = static_cast<ExpansionPanel *>(parent);
+
+  if (event == EVT_KEY_BREAK(KEY_ENTER)) {
+    panel->toggle();
+  }
+  else if (event == EVT_ROTARY_RIGHT && !panel->isOpen) {
+    panel->getNextField()->setFocus(SET_FOCUS_FORWARD);
+  }
+  else {
+    FormGroup::onEvent(event);
+  }
+}
+
+#endif // _EXPANSION_PANEL_H_