diff --git a/python/extensions/alarms/heartbeat_alarm.py b/python/extensions/alarms/heartbeat_alarm.py
new file mode 100644
index 0000000..4f5f4f4
--- /dev/null
+++ b/python/extensions/alarms/heartbeat_alarm.py
@@ -0,0 +1,28 @@
+# Copyright 2017-present Adtran, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from voltha.protos.events_pb2 import AlarmEventType, AlarmEventSeverity, AlarmEventCategory
+from adapter_alarms import AlarmBase
+
+
+class HeartbeatAlarm(AlarmBase):
+    def __init__(self, alarm_mgr, object_type='olt', heartbeat_misses=0):
+        super(HeartbeatAlarm, self).__init__(alarm_mgr, object_type,
+                                             alarm='Heartbeat',
+                                             alarm_category=AlarmEventCategory.PON,
+                                             alarm_type=AlarmEventType.EQUIPMENT,
+                                             alarm_severity=AlarmEventSeverity.CRITICAL)
+        self._misses = heartbeat_misses
+
+    def get_context_data(self):
+        return {'heartbeats-missed': self._misses}