diff --git a/libraries/SITL/SIM_ToneAlarm.cpp b/libraries/SITL/SIM_ToneAlarm.cpp
new file mode 100644
index 0000000000..cf3885690d
--- /dev/null
+++ b/libraries/SITL/SIM_ToneAlarm.cpp
@@ -0,0 +1,45 @@
+/*
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   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, see <http://www.gnu.org/licenses/>.
+ */
+/*
+  simple tonealarm simulator class
+*/
+
+#include <GCS_MAVLink/GCS.h>
+#include <SITL/SITL.h>
+
+#include "SIM_ToneAlarm.h"
+
+using namespace SITL;
+
+// table of user settable parameters
+const AP_Param::GroupInfo ToneAlarm::var_info[] = {
+
+    // @Param: ENABLE
+    // @DisplayName: ToneAlarm enable/disable
+    // @Description: Allows you to enable (1) or disable (0) the simulated tonealarm
+    // @Values: 0:Disabled,1:Enabled
+    // @User: Advanced
+    AP_GROUPINFO("ENABLE", 0, ToneAlarm, _enable, 1),
+
+    AP_GROUPEND
+};
+
+/*
+  update tonealarm state
+ */
+void ToneAlarm::update(const struct sitl_input &input)
+{
+    // currently all of the simulated buzzer logic is within AP_HAL_SITL
+}
diff --git a/libraries/SITL/SIM_ToneAlarm.h b/libraries/SITL/SIM_ToneAlarm.h
new file mode 100644
index 0000000000..7a80636719
--- /dev/null
+++ b/libraries/SITL/SIM_ToneAlarm.h
@@ -0,0 +1,48 @@
+/*
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   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, see <http://www.gnu.org/licenses/>.
+ */
+/*
+  simple tonealarm simulation class; note that the bulk of this is
+  actuall in AP_HAL_SITL at the moment in ToneAlarm_SF.h and
+  ToneAlarm_SF.cpp
+*/
+
+#pragma once
+
+#include <AP_Param/AP_Param.h>
+#include "SITL_Input.h"
+
+#include "stdint.h"
+
+namespace SITL {
+
+class ToneAlarm {
+public:
+    ToneAlarm() {
+        AP_Param::setup_object_defaults(this, var_info);
+    };
+
+    void update(const struct sitl_input &input);
+
+    static const struct AP_Param::GroupInfo var_info[];
+
+    bool is_enabled() const {return static_cast<bool>(_enable);}
+
+ private:
+
+    AP_Int8  _enable;  // enable buzzer sim
+
+};
+
+}
diff --git a/libraries/SITL/SITL.cpp b/libraries/SITL/SITL.cpp
index 7f5e204c8f..5e1520fe38 100644
--- a/libraries/SITL/SITL.cpp
+++ b/libraries/SITL/SITL.cpp
@@ -192,6 +192,9 @@ const AP_Param::GroupInfo SITL::var_info2[] = {
     // @Path: ./SIM_Buzzer.cpp
     AP_SUBGROUPINFO(buzzer_sim, "BZ_", 56, SITL, Buzzer),
 
+    // @Path: ./SIM_ToneAlarm.cpp
+    AP_SUBGROUPINFO(tonealarm_sim, "TA_", 57, SITL, ToneAlarm),
+
     AP_GROUPINFO("MAG_SCALING",    60, SITL,  mag_scaling, 1),
 
     AP_GROUPEND
diff --git a/libraries/SITL/SITL.h b/libraries/SITL/SITL.h
index 47a17d57bc..13e0a60144 100644
--- a/libraries/SITL/SITL.h
+++ b/libraries/SITL/SITL.h
@@ -5,11 +5,12 @@
 #include <AP_Common/Location.h>
 
 #include "SIM_Buzzer.h"
-#include "SIM_Sprayer.h"
-#include "SIM_Gripper_Servo.h"
 #include "SIM_Gripper_EPM.h"
+#include "SIM_Gripper_Servo.h"
 #include "SIM_Parachute.h"
 #include "SIM_Precland.h"
+#include "SIM_Sprayer.h"
+#include "SIM_ToneAlarm.h"
 
 namespace SITL {
 
@@ -300,6 +301,7 @@ public:
 
     Parachute parachute_sim;
     Buzzer buzzer_sim;
+    ToneAlarm tonealarm_sim;
     SIM_Precland precland_sim;
 };