diff --git a/README.md b/README.md
@@ -201,7 +201,7 @@ The following devices have been tested and confirmed as working. If your device
 - **Wall Switches**: S210, S220, S500, S500D, S505, S505D, TS15
 - **Bulbs**: L430C, L430P, L510B, L510E, L530B, L530E, L535E, L630
 - **Light Strips**: L900-10, L900-5, L920-5, L930-5
-- **Cameras**: C100, C110, C210, C220, C225, C325WB, C460, C520WS, C720, TC65, TC70
+- **Cameras**: C100, C110, C210, C220, C225, C325WB, C460, C520WS, C720, TC40, TC65, TC70
 - **Doorbells and chimes**: D100C, D130, D230
 - **Vacuums**: RV20 Max Plus, RV30 Max
 - **Hubs**: H100, H200

diff --git a/SUPPORTED.md b/SUPPORTED.md
@@ -320,6 +320,8 @@ All Tapo devices require authentication.<br>Hub-Connected Devices may work acros
   - Hardware: 1.0 (US) / Firmware: 1.2.8
 - **C720**
   - Hardware: 1.0 (US) / Firmware: 1.2.3
+- **TC40**
+  - Hardware: 2.0 (EU) / Firmware: 1.0.4
 - **TC65**
   - Hardware: 1.0 / Firmware: 1.3.9
 - **TC70**

diff --git a/kasa/credentials.py b/kasa/credentials.py
@@ -16,10 +16,10 @@ class Credentials:
     password: str = field(default="", repr=False)
 
 
-def get_default_credentials(tuple: tuple[str, str]) -> Credentials:
+def get_default_credentials(crdentials: tuple[str, str]) -> Credentials:
     """Return decoded default credentials."""
-    un = base64.b64decode(tuple[0].encode()).decode()
-    pw = base64.b64decode(tuple[1].encode()).decode()
+    un = base64.b64decode(crdentials[0].encode()).decode()
+    pw = base64.b64decode(crdentials[1].encode()).decode()
     return Credentials(un, pw)
 
 
@@ -28,4 +28,5 @@ def get_default_credentials(tuple: tuple[str, str]) -> Credentials:
     "KASACAMERA": ("YWRtaW4=", "MjEyMzJmMjk3YTU3YTVhNzQzODk0YTBlNGE4MDFmYzM="),
     "TAPO": ("dGVzdEB0cC1saW5rLm5ldA==", "dGVzdA=="),
     "TAPOCAMERA": ("YWRtaW4=", "YWRtaW4="),
+    "TAPOCAMERA_LV3": ("YWRtaW4=", "VFBMMDc1NTI2NDYwNjAz"),
 }
diff --git a/kasa/transports/sslaestransport.py b/kasa/transports/sslaestransport.py
@@ -95,8 +95,12 @@ def __init__(
             not self._credentials or self._credentials.username is None
         ) and not self._credentials_hash:
             self._credentials = Credentials()
+        if self._login_version == 3:
+            _default_credentials = DEFAULT_CREDENTIALS["TAPOCAMERA_LV3"]
+        else:
+            _default_credentials = DEFAULT_CREDENTIALS["TAPOCAMERA"]
         self._default_credentials: Credentials = get_default_credentials(
-            DEFAULT_CREDENTIALS["TAPOCAMERA"]
+            _default_credentials
         )
         self._http_client: HttpClient = HttpClient(config)