diff --git a/homeassistant/components/switchbot_cloud/binary_sensor.py b/homeassistant/components/switchbot_cloud/binary_sensor.py
index 55141e5b832e..6fb36c5d1c23 100644
--- a/homeassistant/components/switchbot_cloud/binary_sensor.py
+++ b/homeassistant/components/switchbot_cloud/binary_sensor.py
@@ -92,6 +92,10 @@ BINARY_SENSOR_DESCRIPTIONS_BY_DEVICE_TYPES = {
         CALIBRATION_DESCRIPTION,
         DOOR_OPEN_DESCRIPTION,
     ),
+    "Smart Lock Ultra Max": (
+        CALIBRATION_DESCRIPTION,
+        DOOR_OPEN_DESCRIPTION,
+    ),
     "Smart Lock Vision": (
         CALIBRATION_DESCRIPTION,
         DOOR_OPEN_DESCRIPTION,
diff --git a/homeassistant/components/switchbot_cloud/const.py b/homeassistant/components/switchbot_cloud/const.py
index 7f1ae51f1988..c88ffd3dc85f 100644
--- a/homeassistant/components/switchbot_cloud/const.py
+++ b/homeassistant/components/switchbot_cloud/const.py
@@ -94,6 +94,9 @@ DEVICE_SUPPORT_MAP: Final[dict[str, SwitchbotCloudDeviceConfig]] = {
     "Smart Lock Ultra": SwitchbotCloudDeviceConfig(
         True, entity_config=(Platform.SENSOR, Platform.BINARY_SENSOR, Platform.LOCK)
     ),
+    "Smart Lock Ultra Max": SwitchbotCloudDeviceConfig(
+        True, entity_config=(Platform.SENSOR, Platform.BINARY_SENSOR, Platform.LOCK)
+    ),
     "Smart Lock Vision": SwitchbotCloudDeviceConfig(
         True, entity_config=(Platform.SENSOR, Platform.BINARY_SENSOR, Platform.LOCK)
     ),
diff --git a/homeassistant/components/switchbot_cloud/sensor.py b/homeassistant/components/switchbot_cloud/sensor.py
index 376f69eb0ec9..75e63cf0f4c6 100644
--- a/homeassistant/components/switchbot_cloud/sensor.py
+++ b/homeassistant/components/switchbot_cloud/sensor.py
@@ -245,6 +245,10 @@ SENSOR_DESCRIPTIONS_BY_DEVICE_TYPES = {
         BATTERY_DESCRIPTION,
         LOCK_SENSOR_TYPE_LOCK_STATE_DESCRIPTION,
     ),
+    "Smart Lock Ultra Max": (
+        BATTERY_DESCRIPTION,
+        LOCK_SENSOR_TYPE_LOCK_STATE_DESCRIPTION,
+    ),
     "Smart Lock Vision": (BATTERY_DESCRIPTION,),
     "Smart Lock Vision Pro": (BATTERY_DESCRIPTION,),
     "Lock Vision": (BATTERY_DESCRIPTION,),
diff --git a/tests/components/switchbot_cloud/fixtures/sensor_status.json b/tests/components/switchbot_cloud/fixtures/sensor_status.json
index d54cf269b572..ee53b292cef3 100644
--- a/tests/components/switchbot_cloud/fixtures/sensor_status.json
+++ b/tests/components/switchbot_cloud/fixtures/sensor_status.json
@@ -209,6 +209,16 @@
     "doorState": "open",
     "calibrate": true
   },
+  {
+    "deviceId": "7E50C3AEE222",
+    "deviceType": "Smart Lock Ultra Max",
+    "hubDeviceId": "FFFFFFFEEFF",
+    "battery": 100,
+    "version": "V6.3",
+    "lockState": "unlock",
+    "doorState": "open",
+    "calibrate": true
+  },
   {
     "deviceId": "6D4F9C2A0E8B",
     "deviceType": "Lock Vision",
diff --git a/tests/components/switchbot_cloud/snapshots/test_binary_sensor.ambr b/tests/components/switchbot_cloud/snapshots/test_binary_sensor.ambr
index 3f1f8c46d2f2..0f8b14732f63 100644
--- a/tests/components/switchbot_cloud/snapshots/test_binary_sensor.ambr
+++ b/tests/components/switchbot_cloud/snapshots/test_binary_sensor.ambr
@@ -1223,6 +1223,108 @@
     'state': 'off',
   })
 # ---
+# name: test_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_calibration-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'binary_sensor',
+    'entity_category': <EntityCategory.DIAGNOSTIC: 'diagnostic'>,
+    'entity_id': 'binary_sensor.test_device_name_1_calibration',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Calibration',
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.PROBLEM: 'problem'>,
+    'original_icon': None,
+    'original_name': 'Calibration',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'calibration',
+    'unique_id': 'test-device-id-1_calibrate',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_calibration-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'problem',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Calibration',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.test_device_name_1_calibration',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
+# name: test_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_door-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'binary_sensor',
+    'entity_category': None,
+    'entity_id': 'binary_sensor.test_device_name_1_door',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Door',
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.DOOR: 'door'>,
+    'original_icon': None,
+    'original_name': 'Door',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'test-device-id-1_doorState',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_door-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'door',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Door',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.test_device_name_1_door',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
 # name: test_coordinator_data[Smart Lock Ultra][binary_sensor.test_device_name_1_calibration-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([
@@ -2906,6 +3008,108 @@
     'state': 'unknown',
   })
 # ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_calibration-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'binary_sensor',
+    'entity_category': <EntityCategory.DIAGNOSTIC: 'diagnostic'>,
+    'entity_id': 'binary_sensor.test_device_name_1_calibration',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Calibration',
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.PROBLEM: 'problem'>,
+    'original_icon': None,
+    'original_name': 'Calibration',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'calibration',
+    'unique_id': 'test-device-id-1_calibrate',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_calibration-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'problem',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Calibration',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.test_device_name_1_calibration',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'unknown',
+  })
+# ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_door-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'binary_sensor',
+    'entity_category': None,
+    'entity_id': 'binary_sensor.test_device_name_1_door',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Door',
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.DOOR: 'door'>,
+    'original_icon': None,
+    'original_name': 'Door',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'test-device-id-1_doorState',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][binary_sensor.test_device_name_1_door-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'door',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Door',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.test_device_name_1_door',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'unknown',
+  })
+# ---
 # name: test_no_coordinator_data[Smart Lock Ultra][binary_sensor.test_device_name_1_calibration-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([
diff --git a/tests/components/switchbot_cloud/snapshots/test_sensor.ambr b/tests/components/switchbot_cloud/snapshots/test_sensor.ambr
index 85ddbf7df352..c0e1952edd95 100644
--- a/tests/components/switchbot_cloud/snapshots/test_sensor.ambr
+++ b/tests/components/switchbot_cloud/snapshots/test_sensor.ambr
@@ -2976,6 +2976,131 @@
     'state': '100',
   })
 # ---
+# name: test_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_battery-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': dict({
+      <SensorEntityCapabilityAttribute.STATE_CLASS: 'state_class'>: <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.test_device_name_1_battery',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Battery',
+    'options': dict({
+    }),
+    'original_device_class': <SensorDeviceClass.BATTERY: 'battery'>,
+    'original_icon': None,
+    'original_name': 'Battery',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'test-device-id-1_battery',
+    'unit_of_measurement': <UnitOfRatio.PERCENTAGE: '%'>,
+  })
+# ---
+# name: test_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_battery-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'battery',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Battery',
+      <SensorEntityCapabilityAttribute.STATE_CLASS: 'state_class'>: <SensorStateClass.MEASUREMENT: 'measurement'>,
+      <EntityStateAttribute.UNIT_OF_MEASUREMENT: 'unit_of_measurement'>: <UnitOfRatio.PERCENTAGE: '%'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.test_device_name_1_battery',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '100',
+  })
+# ---
+# name: test_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_lock_state-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': dict({
+      <SensorEntityCapabilityAttribute.OPTIONS: 'options'>: list([
+        'locked',
+        'unlocked',
+        'locking',
+        'unlocking',
+        'jammed',
+        'latch_bolt_locked',
+        'half_locked',
+      ]),
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.test_device_name_1_lock_state',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Lock state',
+    'options': dict({
+    }),
+    'original_device_class': <SensorDeviceClass.ENUM: 'enum'>,
+    'original_icon': None,
+    'original_name': 'Lock state',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'lock_state',
+    'unique_id': 'test-device-id-1_lockState',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_lock_state-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'enum',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Lock state',
+      <SensorEntityCapabilityAttribute.OPTIONS: 'options'>: list([
+        'locked',
+        'unlocked',
+        'locking',
+        'unlocking',
+        'jammed',
+        'latch_bolt_locked',
+        'half_locked',
+      ]),
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.test_device_name_1_lock_state',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'unknown',
+  })
+# ---
 # name: test_coordinator_data[Smart Lock Ultra][sensor.test_device_name_1_battery-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([
@@ -7214,6 +7339,131 @@
     'state': 'unknown',
   })
 # ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_battery-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': dict({
+      <SensorEntityCapabilityAttribute.STATE_CLASS: 'state_class'>: <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.test_device_name_1_battery',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Battery',
+    'options': dict({
+    }),
+    'original_device_class': <SensorDeviceClass.BATTERY: 'battery'>,
+    'original_icon': None,
+    'original_name': 'Battery',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'test-device-id-1_battery',
+    'unit_of_measurement': <UnitOfRatio.PERCENTAGE: '%'>,
+  })
+# ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_battery-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'battery',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Battery',
+      <SensorEntityCapabilityAttribute.STATE_CLASS: 'state_class'>: <SensorStateClass.MEASUREMENT: 'measurement'>,
+      <EntityStateAttribute.UNIT_OF_MEASUREMENT: 'unit_of_measurement'>: <UnitOfRatio.PERCENTAGE: '%'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.test_device_name_1_battery',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'unknown',
+  })
+# ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_lock_state-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': dict({
+      <SensorEntityCapabilityAttribute.OPTIONS: 'options'>: list([
+        'locked',
+        'unlocked',
+        'locking',
+        'unlocking',
+        'jammed',
+        'latch_bolt_locked',
+        'half_locked',
+      ]),
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.test_device_name_1_lock_state',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Lock state',
+    'options': dict({
+    }),
+    'original_device_class': <SensorDeviceClass.ENUM: 'enum'>,
+    'original_icon': None,
+    'original_name': 'Lock state',
+    'platform': 'switchbot_cloud',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'lock_state',
+    'unique_id': 'test-device-id-1_lockState',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_no_coordinator_data[Smart Lock Ultra Max][sensor.test_device_name_1_lock_state-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.DEVICE_CLASS: 'device_class'>: 'enum',
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'test-device-name-1 Lock state',
+      <SensorEntityCapabilityAttribute.OPTIONS: 'options'>: list([
+        'locked',
+        'unlocked',
+        'locking',
+        'unlocking',
+        'jammed',
+        'latch_bolt_locked',
+        'half_locked',
+      ]),
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.test_device_name_1_lock_state',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'unknown',
+  })
+# ---
 # name: test_no_coordinator_data[Smart Lock Ultra][sensor.test_device_name_1_battery-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([
diff --git a/tests/components/switchbot_cloud/test_lock.py b/tests/components/switchbot_cloud/test_lock.py
index c43013555a23..b7c0f500b12b 100644
--- a/tests/components/switchbot_cloud/test_lock.py
+++ b/tests/components/switchbot_cloud/test_lock.py
@@ -30,6 +30,7 @@ from . import configure_integration
         ("Lock Vision", 4),
         ("Lock Vision Pro", 5),
         ("Smart Lock Pro Wifi", 6),
+        ("Smart Lock Ultra Max", 7),
     ],
 )
 async def test_lock(
@@ -74,6 +75,7 @@ async def test_lock(
         ("Smart Lock", 0),
         ("Smart Lock Pro", 1),
         ("Smart Lock Ultra", 2),
+        ("Smart Lock Ultra Max", 3),
         ("Smart Lock Pro Wifi", 5),
     ],
 )