diff --git a/project.godot b/project.godot
index eeac9e4f..76bbd1e6 100644
--- a/project.godot
+++ b/project.godot
@@ -38,6 +38,7 @@ config/mod_bus_interpreter="python"
 config/mod_bus_serial_baud="9600"
 config/mod_bus_serial_port="/dev/pts/3"
 interfer/resend_timeout=1000.0
+config/external_cu=false
 
 [autoload]
 
@@ -94,6 +95,7 @@ enabled=PackedStringArray()
 
 map_server_addr=false
 center_offset=Vector2(0, 0)
+external_cu=false
 
 [gui]
 
diff --git a/scenes/настройки/настройки.gd b/scenes/настройки/настройки.gd
index a510901f..1df773bb 100644
--- a/scenes/настройки/настройки.gd
+++ b/scenes/настройки/настройки.gd
@@ -8,3 +8,9 @@ func _ready() -> void:
     for node in $GridContainer.get_children().filter(func(b): return b is Button):
         node.disabled = true
 
+
+func _on_external_cu_btn_pressed() -> void:
+    var state = $GridContainer2/external_cu_btn.button_pressed
+    ProjectSettings.set_setting('application/config/external_cu', state)
+    if state:
+        signaller.emit_signal('interfer_off_all')
diff --git a/scenes/настройки/настройки.tscn b/scenes/настройки/настройки.tscn
index 6293a8c8..2f966577 100644
--- a/scenes/настройки/настройки.tscn
+++ b/scenes/настройки/настройки.tscn
@@ -267,4 +267,21 @@ text = "Адрес сервера карт"
 horizontal_alignment = 1
 vertical_alignment = 1
 
+[node name="GridContainer2" type="GridContainer" parent="."]
+layout_mode = 0
+offset_left = 900.0
+offset_top = 87.0
+offset_right = 1192.0
+offset_bottom = 193.0
+columns = 2
+
+[node name="external_cu_lbl" type="Label" parent="GridContainer2"]
+layout_mode = 2
+text = "Внешнее целеуказание"
+vertical_alignment = 1
+
+[node name="external_cu_btn" type="CheckButton" parent="GridContainer2"]
+layout_mode = 2
+
 [connection signal="text_changed" from="edt_mapaddr" to="edt_mapaddr" method="_on_text_changed"]
+[connection signal="pressed" from="GridContainer2/external_cu_btn" to="." method="_on_external_cu_btn_pressed"]