diff --git a/platypush/entities/sensors.py b/platypush/entities/sensors.py
index 0a2c0986..3b57e02d 100644
--- a/platypush/entities/sensors.py
+++ b/platypush/entities/sensors.py
@@ -57,9 +57,14 @@ if 'raw_sensor' not in Base.metadata:
 
         @property
         def value(self):
-            if self.is_binary:
-                return self._value.decode()
-            if self.is_json:
+            if self._value is None:
+                return None
+            if self.is_binary and isinstance(self._value, str):
+                value = self._value[2:]
+                return bytes(
+                    [int(value[i : i + 2], 16) for i in range(0, len(value), 2)]
+                )
+            if self.is_json and isinstance(self._value, (str, bytes)):
                 return json.loads(self._value)
             return self._value
 
diff --git a/platypush/message/__init__.py b/platypush/message/__init__.py
index 1fe39941..eaed19e9 100644
--- a/platypush/message/__init__.py
+++ b/platypush/message/__init__.py
@@ -44,6 +44,8 @@ class Message:
                 return obj.tolist()
             if isinstance(obj, decimal.Decimal):
                 return float(obj)
+            if isinstance(obj, (bytes, bytearray)):
+                return '0x' + ''.join([f'{x:02x}' for x in obj])
             if callable(obj):
                 return '<function at {}.{}>'.format(obj.__module__, obj.__name__)