Ensure Abode provides valid device classes (#82929)

homeassistant/components/abode/binary_sensor.py

@@ -1,4 +1,7 @@
 """Support for Abode Security System binary sensors."""
+from __future__ import annotations
+
+from contextlib import suppress
 from typing import cast
 
 from abodepy.devices.binary_sensor import AbodeBinarySensor as ABBinarySensor
@@ -47,8 +50,10 @@ class AbodeBinarySensor(AbodeDevice, BinarySensorEntity):
         return cast(bool, self._device.is_on)
 
     @property
-    def device_class(self) -> str:
+    def device_class(self) -> BinarySensorDeviceClass | None:
         """Return the class of the binary sensor."""
         if self._device.get_value("is_window") == "1":
             return BinarySensorDeviceClass.WINDOW
-        return cast(str, self._device.generic_type)
+        with suppress(ValueError):
+            return BinarySensorDeviceClass(cast(str, self._device.generic_type))
+        return None