diff --git a/haco/button.py b/haco/button.py
new file mode 100644
index 0000000..e67400b
--- /dev/null
+++ b/haco/button.py
@@ -0,0 +1,15 @@
+from dataclasses import dataclass
+from typing import Literal
+
+from control import Control
+
+
+@dataclass(kw_only=True)
+class Button(Control):
+    platform: Literal["climate"] = "button"
+
+    def command(self, value):
+        raise NotImplementedError()
+
+    def state(self, value):
+        raise NotImplementedError()
diff --git a/haco/capabilities.py b/haco/capabilities.py
index a03d070..3bf81e7 100644
--- a/haco/capabilities.py
+++ b/haco/capabilities.py
@@ -12,7 +12,7 @@ if TYPE_CHECKING:
 
 @dataclass(kw_only=True)
 class Capability(Base):
-    name: str
+    name: str | None = None
 
     state: AnnounceTopicState | None = field(default_factory=AnnounceTopicState)
     command: AnnounceTopicCommand | None = field(default_factory=AnnounceTopicCommand)
diff --git a/haco/control.py b/haco/control.py
index da7eeee..4094e47 100644
--- a/haco/control.py
+++ b/haco/control.py
@@ -53,7 +53,7 @@ class Control(Base):
     @classmethod
     def get_capabilities(cls):
         return [
-            Capability(name='default')
+            Capability(name=None)
         ]
 
     def get_unique_id(self) -> str:
diff --git a/haco/sb3.py b/haco/sb3.py
index cdb85a6..df5bf8c 100644
--- a/haco/sb3.py
+++ b/haco/sb3.py
@@ -1,5 +1,6 @@
 import asyncio
 
+from haco.button import Button
 from haco.client import ClientHaco
 from haco.climate import Climate
 from haco.constants import MQTT_HOST
@@ -9,7 +10,9 @@ from haco.device import Device
 async def main():
     climate_a = Climate(name="Dev Climate A", fan_modes=['a', 'b', 'c'])
     climate_b = Climate(name="Dev Climate B", fan_modes=['a', 'b', 'c'])
-    device = Device(name="Dev Device", controls=[climate_a, climate_b])
+
+    b1 = Button(name="Dev Button 1")
+    device = Device(name="Dev Device", controls=[climate_a, climate_b, b1])
 
     client = ClientHaco(hostname=MQTT_HOST, device=device)
 
diff --git a/haco/topics.py b/haco/topics.py
index 48c4655..436fae2 100644
--- a/haco/topics.py
+++ b/haco/topics.py
@@ -13,7 +13,10 @@ if TYPE_CHECKING:
 @dataclass(kw_only=True)
 class AnnounceTopic:
     IO: ClassVar[str | None] = None
-    key: str = '{capability}_{io}_topic'
+
+    KEY_DEFAULTS: ClassVar[dict] = {True: '{capability}_{io}_topic', False: '{io}_topic'}
+
+    key: str | None = None
     value: str = '{path}/{capability}/{io}'
 
     parent: Capability | None = None
@@ -22,6 +25,8 @@ class AnnounceTopic:
 
     def set_parent(self, capability: Capability):
         self.parent = capability
+        if self.key is None:
+            self.key = self.KEY_DEFAULTS[bool(self.capability.name)]
         self.announce = self.get_announce()
         self.subscriptions = self.get_subscriptions()
 
@@ -32,7 +37,7 @@ class AnnounceTopic:
     def fills(self):
         return dict(
             path=str(self.capability.control.topic),
-            capability=self.capability.name,
+            capability=self.capability.name or 'default',
             io=self.IO
         )
 
@@ -49,6 +54,9 @@ class AnnounceTopic:
 
     @property
     def callback_name(self):
+        if not self.capability.name:
+            return self.IO
+
         return f'{self.capability.name}_{self.IO}'
 
     def get_subscriptions(self):
diff --git a/haco/version b/haco/version
index 17c3789..8de0802 100644
--- a/haco/version
+++ b/haco/version
@@ -1 +1 @@
-0.1.0a2
\ No newline at end of file
+0.1.0-alpha.3
\ No newline at end of file