diff --git a/custom_components/xiaomi_home/miot/specs/specv2entity.py b/custom_components/xiaomi_home/miot/specs/specv2entity.py
index 4a57867..30528f8 100644
--- a/custom_components/xiaomi_home/miot/specs/specv2entity.py
+++ b/custom_components/xiaomi_home/miot/specs/specv2entity.py
@@ -47,6 +47,7 @@ Conversion rules of MIoT-Spec-V2 instance to Home Assistant entity.
 """
 from homeassistant.components.sensor import SensorDeviceClass
 from homeassistant.components.event import EventDeviceClass
+from homeassistant.components.binary_sensor import BinarySensorDeviceClass     
 
 # pylint: disable=pointless-string-statement
 """SPEC_DEVICE_TRANS_MAP
@@ -391,6 +392,14 @@ SPEC_PROP_TRANS_MAP: dict[str, dict | str] = {
             'device_class': SensorDeviceClass.DURATION,
             'entity': 'sensor'
         },
+        'submersion-state': {                                                 
+            'device_class': BinarySensorDeviceClass.MOISTURE,                  
+            'entity': 'binary_sensor'                                           
+        },                                                                     
+        'contact-state': {                                                      
+            'device_class': BinarySensorDeviceClass.DOOR,                     
+            'entity': 'binary_sensor'                                          
+        },
         'has-someone-duration': 'no-one-determine-time',
         'no-one-duration': 'no-one-determine-time'
     }