diff --git a/homeassistant/components/tuya/binary_sensor.py b/homeassistant/components/tuya/binary_sensor.py
index 4fef11a7335..e28572228b1 100644
--- a/homeassistant/components/tuya/binary_sensor.py
+++ b/homeassistant/components/tuya/binary_sensor.py
@@ -314,6 +314,15 @@ BINARY_SENSORS: dict[str, tuple[TuyaBinarySensorEntityDescription, ...]] = {
         ),
         TAMPER_BINARY_SENSOR,
     ),
+    # Zigbee gateway
+    # Undocumented
+    "wg2": (
+        TuyaBinarySensorEntityDescription(
+            key=DPCode.MASTER_STATE,
+            device_class=BinarySensorDeviceClass.PROBLEM,
+            on_value="alarm",
+        ),
+    ),
     # Thermostatic Radiator Valve
     # Not documented
     "wkf": (
diff --git a/homeassistant/components/tuya/const.py b/homeassistant/components/tuya/const.py
index 87f80755e8b..91c8444c8c3 100644
--- a/homeassistant/components/tuya/const.py
+++ b/homeassistant/components/tuya/const.py
@@ -229,7 +229,7 @@ class DPCode(StrEnum):
     LIGHT_MODE = "light_mode"
     LOCK = "lock"  # Lock / Child lock
     MASTER_MODE = "master_mode"  # alarm mode
-    MASTER_STATE = "master_state"  # alarm state
+    MASTER_STATE = "master_state"
     MACH_OPERATE = "mach_operate"
     MANUAL_FEED = "manual_feed"
     MATERIAL = "material"  # Material
diff --git a/tests/components/tuya/__init__.py b/tests/components/tuya/__init__.py
index 7d6cd32959c..68833dde92f 100644
--- a/tests/components/tuya/__init__.py
+++ b/tests/components/tuya/__init__.py
@@ -335,6 +335,10 @@ DEVICE_MOCKS = {
         Platform.CLIMATE,
         Platform.SWITCH,
     ],
+    "wg2_nwxr8qcu4seltoro": [
+        # https://github.com/orgs/home-assistant/discussions/430
+        Platform.BINARY_SENSOR,
+    ],
     "wk_fi6dne5tu4t1nm6j": [
         # https://github.com/orgs/home-assistant/discussions/243
         Platform.CLIMATE,
diff --git a/tests/components/tuya/fixtures/wg2_nwxr8qcu4seltoro.json b/tests/components/tuya/fixtures/wg2_nwxr8qcu4seltoro.json
new file mode 100644
index 00000000000..0e39f713dd0
--- /dev/null
+++ b/tests/components/tuya/fixtures/wg2_nwxr8qcu4seltoro.json
@@ -0,0 +1,90 @@
+{
+  "endpoint": "https://apigw.tuyaeu.com",
+  "terminal_id": "1752690839034sq255y",
+  "mqtt_connected": true,
+  "disabled_by": null,
+  "disabled_polling": false,
+  "id": "bf79ca977d67322eb2o68m",
+  "name": "X5 Zigbee Gateway",
+  "category": "wg2",
+  "product_id": "nwxr8qcu4seltoro",
+  "product_name": "X5",
+  "online": true,
+  "sub": true,
+  "time_zone": "+02:00",
+  "active_time": "2025-07-14T10:19:21+00:00",
+  "create_time": "2025-07-14T10:19:21+00:00",
+  "update_time": "2025-07-14T10:19:21+00:00",
+  "function": {
+    "master_state": {
+      "type": "Enum",
+      "value": {
+        "range": ["normal", "alarm"]
+      }
+    },
+    "factory_reset": {
+      "type": "Boolean",
+      "value": {}
+    },
+    "master_language": {
+      "type": "Enum",
+      "value": {
+        "range": [
+          "chinese_simplified",
+          "chinese_traditional",
+          "english",
+          "french",
+          "italian",
+          "german",
+          "spanish",
+          "portuguese",
+          "russian",
+          "japanese"
+        ]
+      }
+    }
+  },
+  "status_range": {
+    "master_state": {
+      "type": "Enum",
+      "value": {
+        "range": ["normal", "alarm"]
+      }
+    },
+    "master_information": {
+      "type": "String",
+      "value": {
+        "maxlen": 255
+      }
+    },
+    "factory_reset": {
+      "type": "Boolean",
+      "value": {}
+    },
+    "master_language": {
+      "type": "Enum",
+      "value": {
+        "range": [
+          "chinese_simplified",
+          "chinese_traditional",
+          "english",
+          "french",
+          "italian",
+          "german",
+          "spanish",
+          "portuguese",
+          "russian",
+          "japanese"
+        ]
+      }
+    }
+  },
+  "status": {
+    "master_state": "normal",
+    "master_information": "",
+    "factory_reset": false,
+    "master_language": "chinese_simplified"
+  },
+  "set_up": false,
+  "support_local": true
+}
diff --git a/tests/components/tuya/snapshots/test_binary_sensor.ambr b/tests/components/tuya/snapshots/test_binary_sensor.ambr
index 7cb613ebbf2..c9d2296e726 100644
--- a/tests/components/tuya/snapshots/test_binary_sensor.ambr
+++ b/tests/components/tuya/snapshots/test_binary_sensor.ambr
@@ -685,6 +685,55 @@
     'state': 'off',
   })
 # ---
+# name: test_platform_setup_and_discovery[wg2_nwxr8qcu4seltoro][binary_sensor.x5_zigbee_gateway_problem-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    '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.x5_zigbee_gateway_problem',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.PROBLEM: 'problem'>,
+    'original_icon': None,
+    'original_name': 'Problem',
+    'platform': 'tuya',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'tuya.bf79ca977d67322eb2o68mmaster_state',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_platform_setup_and_discovery[wg2_nwxr8qcu4seltoro][binary_sensor.x5_zigbee_gateway_problem-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'problem',
+      'friendly_name': 'X5 Zigbee Gateway Problem',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.x5_zigbee_gateway_problem',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
 # name: test_platform_setup_and_discovery[ywbj_gf9dejhmzffgdyfj][binary_sensor.smoke_detector_upstairs_smoke-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({