From ddab50edcc82f42006ecc0948aa206f7f3c97124 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Carlos=20S=C3=A1nchez=20L=C3=B3pez?=
 <77412126+ChayoteJarocho@users.noreply.github.com>
Date: Tue, 17 Mar 2026 14:41:57 -0600
Subject: [PATCH] Add binary sensor support for Tuya WG2 alarm panel (Duosmart
 C30) (#165833)

---
 .../components/tuya/binary_sensor.py          |  5 ++
 .../tuya/snapshots/test_binary_sensor.ambr    | 51 +++++++++++++++++++
 .../components/tuya/snapshots/test_init.ambr  |  2 +-
 3 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/homeassistant/components/tuya/binary_sensor.py b/homeassistant/components/tuya/binary_sensor.py
index 06bd42853ea..bc8ff393746 100644
--- a/homeassistant/components/tuya/binary_sensor.py
+++ b/homeassistant/components/tuya/binary_sensor.py
@@ -317,6 +317,11 @@ BINARY_SENSORS: dict[DeviceCategory, tuple[TuyaBinarySensorEntityDescription, ..
             entity_category=EntityCategory.DIAGNOSTIC,
             on_value="alarm",
         ),
+        TuyaBinarySensorEntityDescription(
+            key=DPCode.CHARGE_STATE,
+            device_class=BinarySensorDeviceClass.BATTERY_CHARGING,
+            entity_category=EntityCategory.DIAGNOSTIC,
+        ),
     ),
     DeviceCategory.WK: (
         TuyaBinarySensorEntityDescription(
diff --git a/tests/components/tuya/snapshots/test_binary_sensor.ambr b/tests/components/tuya/snapshots/test_binary_sensor.ambr
index 205a8b6ae8f..5519325b177 100644
--- a/tests/components/tuya/snapshots/test_binary_sensor.ambr
+++ b/tests/components/tuya/snapshots/test_binary_sensor.ambr
@@ -101,6 +101,57 @@
     'state': 'off',
   })
 # ---
+# name: test_platform_setup_and_discovery[binary_sensor.c30_charging-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.c30_charging',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Charging',
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.BATTERY_CHARGING: 'battery_charging'>,
+    'original_icon': None,
+    'original_name': 'Charging',
+    'platform': 'tuya',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'tuya.rirsc4vhpbv2whkp2gwcharge_state',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_platform_setup_and_discovery[binary_sensor.c30_charging-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'battery_charging',
+      'friendly_name': 'C30 Charging',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.c30_charging',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
 # name: test_platform_setup_and_discovery[binary_sensor.cat_feeder_feeding-entry]
   EntityRegistryEntrySnapshot({
     'aliases': list([
diff --git a/tests/components/tuya/snapshots/test_init.ambr b/tests/components/tuya/snapshots/test_init.ambr
index 369f119271b..566552d239c 100644
--- a/tests/components/tuya/snapshots/test_init.ambr
+++ b/tests/components/tuya/snapshots/test_init.ambr
@@ -7150,7 +7150,7 @@
     'labels': set({
     }),
     'manufacturer': 'Tuya',
-    'model': 'C30 (unsupported)',
+    'model': 'C30',
     'model_id': 'pkhw2vbphv4csrir',
     'name': 'C30',
     'name_by_user': None,