diff --git a/apps/qolsysgw/mqtt/updater.py b/apps/qolsysgw/mqtt/updater.py
index 6013ca8..727f8bc 100644
--- a/apps/qolsysgw/mqtt/updater.py
+++ b/apps/qolsysgw/mqtt/updater.py
@@ -406,6 +406,11 @@ def update_attributes(self):
                 'last_error_desc': self._partition.last_error_desc,
                 'last_error_at': self._partition.last_error_at,
                 'disarm_failed': self._partition.disarm_failed,
+                'tampered_sensors': (
+                    ','.join(str(s) for s in self._partition.tampered_sensors)
+                    if self._partition.tampered_sensors
+                    else None
+                ),
             }),
         )
 
diff --git a/apps/qolsysgw/qolsys/partition.py b/apps/qolsysgw/qolsys/partition.py
index 19eaef8..c393d55 100644
--- a/apps/qolsysgw/qolsys/partition.py
+++ b/apps/qolsysgw/qolsys/partition.py
@@ -3,6 +3,7 @@
 from datetime import datetime, timezone
 
 from qolsys.observable import QolsysObservable
+from qolsys.sensors import QolsysSensor
 
 
 LOGGER = logging.getLogger(__name__)
@@ -32,6 +33,7 @@ def __init__(self, partition_id: int, name: str, status: str,
         self._last_error_desc = None
         self._last_error_at = None
         self._disarm_failed = 0
+        self._tampered_sensors = []
 
     @property
     def id(self):
@@ -73,11 +75,16 @@ def last_error_at(self):
     def disarm_failed(self):
         return self._disarm_failed
 
+    @property
+    def tampered_sensors(self):
+        return self._tampered_sensors
+
     @status.setter
     def status(self, value):
         new_value = value.upper()
         if self._status != new_value:
-            LOGGER.debug(f"Partition '{self.id}' ({self.name}) status updated to '{new_value}'")
+            LOGGER.debug(f"Partition '{self.id}' ({self.name}) status "
+                         f"updated to '{new_value}'")
             prev_value = self._status
 
             self._status = new_value
@@ -95,7 +102,8 @@ def status(self, value):
     def secure_arm(self, value):
         new_value = bool(value)
         if self._secure_arm != new_value:
-            LOGGER.debug(f"Partition '{self.id}' ({self.name}) secure arm updated to '{new_value}'")
+            LOGGER.debug(f"Partition '{self.id}' ({self.name}) secure arm "
+                         f"updated to '{new_value}'")
             prev_value = self._secure_arm
             self._secure_arm = new_value
 
@@ -108,7 +116,8 @@ def alarm_type(self, value):
             value = value.upper()
 
         if self._alarm_type != value:
-            LOGGER.debug(f"Partition '{self.id}' ({self.name}) alarm type updated to '{value}'")
+            LOGGER.debug(f"Partition '{self.id}' ({self.name}) alarm type "
+                         f"updated to '{value}'")
             prev_value = self._alarm_type
             self._alarm_type = value
 
@@ -120,11 +129,30 @@ def disarm_failed(self, value):
         new_value = int(value)
 
         if self._disarm_failed != new_value:
-            LOGGER.debug(f"Partition '{self.id}' ({self.name}) disarm failed updated to '{value}'")
+            LOGGER.debug(f"Partition '{self.id}' ({self.name}) disarm failed "
+                         f"updated to '{new_value}'")
             self._disarm_failed = new_value
 
             self.notify(change=self.NOTIFY_UPDATE_ATTRIBUTES)
 
+    @tampered_sensors.setter
+    def tampered_sensors(self, value):
+        new_value = sorted(value)
+
+        if self._tampered_sensors != new_value:
+            LOGGER.debug(f"Partition '{self.id}' ({self.name}) tampered "
+                         f"sensors updated to '{new_value}'")
+            self._tampered_sensors = new_value
+
+            self.notify(change=self.NOTIFY_UPDATE_ATTRIBUTES)
+
+    def _update_tampered_sensors(self):
+        self.tampered_sensors = sorted([
+            zone_id
+            for zone_id, zone in self._sensors.items()
+            if zone.tampered
+        ])
+
     def triggered(self, alarm_type: str = None):
         self.status = 'ALARM'
         self.alarm_type = alarm_type
@@ -153,6 +181,7 @@ def add_sensor(self, sensor):
             return
 
         self._sensors[sensor.zone_id] = sensor
+        sensor.register(self, callback=self._update_sensor_callback)
         self.notify(change=self.NOTIFY_ADD_SENSOR, new_value=sensor)
 
     def update_sensor(self, sensor):
@@ -170,9 +199,16 @@ def remove_zone(self, zone_id):
 
         del self._sensors[zone_id]
 
+        zone.unregister(self)
+
         self.notify(change=self.NOTIFY_REMOVE_SENSOR,
                     prev_value=zone)
 
+    def _update_sensor_callback(self, sensor: QolsysSensor, change,
+                                prev_value=None, new_value=None):
+        if change == QolsysSensor.NOTIFY_UPDATE_PATTERN.format(attr='tampered'):
+            self._update_tampered_sensors()
+
     def __str__(self):
         return (f"<QolsysPartition id={self.id} name={self.name} "
                 f"status={self.status} secure_arm={self.secure_arm} "
diff --git a/tests/end-to-end/test_qolsysgw.py b/tests/end-to-end/test_qolsysgw.py
index 49a7b7a..53a198e 100644
--- a/tests/end-to-end/test_qolsysgw.py
+++ b/tests/end-to-end/test_qolsysgw.py
@@ -217,6 +217,7 @@ async def _check_initial_state(self, ctx):
                     'disarm_failed': 0,
                     'secure_arm': False,
                     'supported_features': 63,
+                    'tampered_sensors': None,
                 },
                 'entity_id': 'alarm_control_panel.partition0',
                 'state': 'disarmed',
@@ -364,6 +365,7 @@ async def _check_initial_state(self, ctx):
                     'disarm_failed': 0,
                     'secure_arm': False,
                     'supported_features': 63,
+                    'tampered_sensors': None,
                 },
                 'entity_id': 'alarm_control_panel.partition1',
                 'state': 'disarmed',
@@ -430,7 +432,7 @@ async def _check_panel_events(self, ctx):
         closed_entities = [100, 110, 111, 120, 121, 130, 140, 141, 150,
                            200, 210, 220]
         open_entities = [101]
-        tamper_entities = [100, 110, 111, 210]
+        tamper_entities = [100, 110, 111, 210, 220]
         untamper_entities_to_open = [100]
         untamper_entities_to_closed_short = [110]
         untamper_entities_to_closed_long = [111]
@@ -532,6 +534,7 @@ def zone_active_event(zone_id, closed=False):
                     'disarm_failed': 1,
                     'secure_arm': False,
                     'supported_features': 63,
+                    'tampered_sensors': None,
                 },
                 'entity_id': 'alarm_control_panel.partition0',
                 'state': 'armed_away',
@@ -679,6 +682,7 @@ def zone_active_event(zone_id, closed=False):
                     'disarm_failed': 0,
                     'secure_arm': True,
                     'supported_features': 63,
+                    'tampered_sensors': '210,220',
                 },
                 'entity_id': 'alarm_control_panel.partition1',
                 'state': 'triggered',
@@ -717,7 +721,7 @@ def zone_active_event(zone_id, closed=False):
                     'zone_alarm_type': 0,
                     'zone_physical_type': 10,
                     'zone_type': 8,
-                    'tampered': False,
+                    'tampered': True,
                 },
                 'entity_id': 'binary_sensor.my_heat_sensor',
                 'state': 'on',
diff --git a/tests/integration/test_qolsys_events.py b/tests/integration/test_qolsys_events.py
index acefb01..eef5aa3 100644
--- a/tests/integration/test_qolsys_events.py
+++ b/tests/integration/test_qolsys_events.py
@@ -109,6 +109,7 @@ async def _check_partition_mqtt_messages(self, gw, partition_flat_name,
                     'last_error_desc': state.last_error_desc,
                     'last_error_at': state.last_error_at,
                     'disarm_failed': state.disarm_failed,
+                    'tampered_sensors': None,
                 },
                 mqtt_attributes['payload'],
             )