diff --git a/README.md b/README.md
index 6e883dbc..70c3127e 100644
--- a/README.md
+++ b/README.md
@@ -175,6 +175,9 @@ Please refer to [our contributing guidelines](https://python-kasa.readthedocs.io
 
 The following devices have been tested and confirmed as working. If your device is unlisted but working, please consider [contributing a fixture file](https://python-kasa.readthedocs.io/en/latest/contribute.html#contributing-fixture-files).
 
+> [!NOTE]
+> The hub attached Tapo buttons S200B and S200D do not currently support alerting when the button is pressed.
+
 <!--Do not edit text inside the SUPPORTED section below -->
 <!--SUPPORTED_START-->
 ### Supported Kasa devices
@@ -195,7 +198,7 @@ The following devices have been tested and confirmed as working. If your device
 - **Bulbs**: L510B, L510E, L530E
 - **Light Strips**: L900-10, L900-5, L920-5, L930-5
 - **Hubs**: H100
-- **Hub-Connected Devices<sup>\*\*\*</sup>**: T100, T110, T300, T310, T315
+- **Hub-Connected Devices<sup>\*\*\*</sup>**: S200B, T100, T110, T300, T310, T315
 
 <!--SUPPORTED_END-->
 <sup>\*</sup>&nbsp;&nbsp; Model requires authentication<br>
diff --git a/SUPPORTED.md b/SUPPORTED.md
index f80362fb..cb995eca 100644
--- a/SUPPORTED.md
+++ b/SUPPORTED.md
@@ -2,6 +2,10 @@
 
 The following devices have been tested and confirmed as working. If your device is unlisted but working, please open a pull request to update the list and add a fixture file (use `python -m devtools.dump_devinfo` to generate one).
 
+> [!NOTE]
+> The hub attached Tapo buttons S200B and S200D do not currently support alerting when the button is pressed.
+
+
 <!--Do not edit text inside the SUPPORTED section below -->
 <!--SUPPORTED_START-->
 ## Kasa devices
@@ -237,6 +241,8 @@ All Tapo devices require authentication.<br>Hub-Connected Devices may work acros
 
 ### Hub-Connected Devices
 
+- **S200B**
+  - Hardware: 1.0 (EU) / Firmware: 1.11.0
 - **T100**
   - Hardware: 1.0 (EU) / Firmware: 1.12.0
 - **T110**
diff --git a/kasa/tests/device_fixtures.py b/kasa/tests/device_fixtures.py
index a2ef92c5..fec386d6 100644
--- a/kasa/tests/device_fixtures.py
+++ b/kasa/tests/device_fixtures.py
@@ -119,7 +119,7 @@ DIMMERS = {
 }
 
 HUBS_SMART = {"H100", "KH100"}
-SENSORS_SMART = {"T310", "T315", "T300", "T100", "T110"}
+SENSORS_SMART = {"T310", "T315", "T300", "T100", "T110", "S200B"}
 THERMOSTATS_SMART = {"KE100"}
 
 WITH_EMETER_IOT = {"HS110", "HS300", "KP115", "KP125", *BULBS_IOT}
diff --git a/kasa/tests/fixtures/smart/child/S200B(EU)_1.0_1.11.0.json b/kasa/tests/fixtures/smart/child/S200B(EU)_1.0_1.11.0.json
new file mode 100644
index 00000000..9df75fd7
--- /dev/null
+++ b/kasa/tests/fixtures/smart/child/S200B(EU)_1.0_1.11.0.json
@@ -0,0 +1,115 @@
+{
+    "component_nego": {
+        "component_list": [
+            {
+                "id": "device",
+                "ver_code": 2
+            },
+            {
+                "id": "quick_setup",
+                "ver_code": 3
+            },
+            {
+                "id": "trigger_log",
+                "ver_code": 1
+            },
+            {
+                "id": "time",
+                "ver_code": 1
+            },
+            {
+                "id": "device_local_time",
+                "ver_code": 1
+            },
+            {
+                "id": "account",
+                "ver_code": 1
+            },
+            {
+                "id": "synchronize",
+                "ver_code": 1
+            },
+            {
+                "id": "cloud_connect",
+                "ver_code": 1
+            },
+            {
+                "id": "iot_cloud",
+                "ver_code": 1
+            },
+            {
+                "id": "firmware",
+                "ver_code": 1
+            },
+            {
+                "id": "localSmart",
+                "ver_code": 1
+            },
+            {
+                "id": "battery_detect",
+                "ver_code": 1
+            },
+            {
+                "id": "double_click",
+                "ver_code": 1
+            }
+        ]
+    },
+    "get_auto_update_info": -1001,
+    "get_connect_cloud_state": {
+        "status": 0
+    },
+    "get_device_info": {
+        "at_low_battery": false,
+        "avatar": "button",
+        "bind_count": 2,
+        "category": "subg.trigger.button",
+        "device_id": "SCRUBBED_CHILD_DEVICE_ID_1",
+        "fw_ver": "1.11.0 Build 230821 Rel.113553",
+        "hw_id": "00000000000000000000000000000000",
+        "hw_ver": "1.0",
+        "jamming_rssi": -120,
+        "jamming_signal_level": 1,
+        "lastOnboardingTimestamp": 1714016798,
+        "mac": "202351000000",
+        "model": "S200B",
+        "nickname": "I01BU0tFRF9OQU1FIw==",
+        "oem_id": "00000000000000000000000000000000",
+        "parent_device_id": "0000000000000000000000000000000000000000",
+        "region": "Europe/London",
+        "report_interval": 16,
+        "rssi": -55,
+        "signal_level": 3,
+        "specs": "EU",
+        "status": "online",
+        "status_follow_edge": false,
+        "type": "SMART.TAPOSENSOR"
+    },
+    "get_device_time": -1001,
+    "get_device_usage": -1001,
+    "get_double_click_info": {
+        "enable": false
+    },
+    "get_fw_download_state": {
+        "cloud_cache_seconds": 1,
+        "download_progress": 0,
+        "reboot_time": 5,
+        "status": 0,
+        "upgrade_time": 5
+    },
+    "get_latest_fw": {
+        "fw_ver": "1.12.0 Build 231121 Rel.092444",
+        "hw_id": "00000000000000000000000000000000",
+        "need_to_upgrade": true,
+        "oem_id": "00000000000000000000000000000000",
+        "release_date": "2024-04-02",
+        "release_note": "Modifications and Bug Fixes:\n1. Optimized low battery notification.\n2. Fixed some minor bugs.",
+        "type": 2
+    },
+    "get_trigger_logs": {
+        "logs": [],
+        "start_id": 0,
+        "sum": 0
+    },
+    "qs_component_nego": -1001
+}