2 files changed, 5 insertions, 0 deletions
diff --git a/include/py/homekit/camera/config.py b/include/py/homekit/camera/config.py
index bcd5d07..257e5f1 100644
--- a/include/py/homekit/camera/config.py
+++ b/include/py/homekit/camera/config.py
@@ -138,6 +138,9 @@ class IpcamConfig(ConfigUnit):
     def has_camera(self, camera: int) -> bool:
         return camera in tuple(self['cameras'].keys())
 
+    def has_zone(self, zone: str) -> bool:
+        return zone in tuple(self['zones'].keys())
+
     def get_camera_container(self, camera: int) -> VideoContainerType:
         return self.get_camera_type(camera).get_container()
 
diff --git a/include/py/homekit/util.py b/include/py/homekit/util.py
index c686f29..4410251 100644
--- a/include/py/homekit/util.py
+++ b/include/py/homekit/util.py
@@ -121,6 +121,8 @@ def json_serial(obj):
         return obj.value
     if isinstance(obj, KeysView):
         return list(obj)
+    if isinstance(obj, Addr):
+        return str(obj)
     raise TypeError("Type %s not serializable" % type(obj))