diff --git a/custom_components/xiaomi_home/miot/miot_spec.py b/custom_components/xiaomi_home/miot/miot_spec.py
index 31b4d47..d9b6986 100644
--- a/custom_components/xiaomi_home/miot/miot_spec.py
+++ b/custom_components/xiaomi_home/miot/miot_spec.py
@@ -1409,18 +1409,19 @@ class MIoTSpecParser:
         urn_service_instance = instance.get('services', [])
         # set spec instance in spec_add.json as not being filtered.
         custom_service_instance = self._spec_add.get_service_add()
-        for service in custom_service_instance:
-            service['need_filter'] = False
-            if 'properties' in service:
-                for prop in service['properties']:
-                    prop['need_filter'] = False
-            if 'actions' in service:
-                for action in service['actions']:
-                    action['need_filter'] = False
-            if 'events' in service:
-                for event in service['events']:
-                    event['need_filter'] = False
-            urn_service_instance.append(service)
+        if custom_service_instance:
+            for service in custom_service_instance:
+                service['need_filter'] = False
+                if 'properties' in service:
+                    for prop in service['properties']:
+                        prop['need_filter'] = False
+                if 'actions' in service:
+                    for action in service['actions']:
+                        action['need_filter'] = False
+                if 'events' in service:
+                    for event in service['events']:
+                        event['need_filter'] = False
+                urn_service_instance.append(service)
         # Parse services
         for service in urn_service_instance:
             if ('iid' not in service or 'type' not in service or
diff --git a/custom_components/xiaomi_home/miot/specs/spec_add.json b/custom_components/xiaomi_home/miot/specs/spec_add.json
index 9d21ad8..ce07dd2 100644
--- a/custom_components/xiaomi_home/miot/specs/spec_add.json
+++ b/custom_components/xiaomi_home/miot/specs/spec_add.json
@@ -18,5 +18,74 @@
         }
       ]
     }
+  ],
+  "urn:miot-spec-v2:device:light:0000A001:yeelink-ceiling19:1": "urn:miot-spec-v2:device:light:0000A001:yeelink-ceiling4:1",
+  "urn:miot-spec-v2:device:light:0000A001:yeelink-ceiling20:1": "urn:miot-spec-v2:device:light:0000A001:yeelink-ceiling4:1",
+  "urn:miot-spec-v2:device:light:0000A001:yeelink-ceiling4:1": [
+    {
+      "iid": 200,
+      "type": "urn:miot-spec-v2:service:ambient-light:0000789D:yeelink-ceiling4:1",
+      "description": "Ambient Light",
+      "properties": [
+        {
+          "iid": 201,
+          "type": "urn:miot-spec-v2:property:on:00000006:yeelink-ceiling4:1",
+          "description": "Switch Status",
+          "format": "bool",
+          "access": [
+            "read",
+            "write"
+          ]
+        },
+        {
+          "iid": 202,
+          "type": "urn:miot-spec-v2:property:brightness:0000000D:yeelink-ceiling4:1",
+          "description": "Brightness",
+          "format": "uint8",
+          "access": [
+            "read",
+            "write"
+          ],
+          "unit": "percentage",
+          "value-range": [
+            1,
+            100,
+            1
+          ]
+        },
+        {
+          "iid": 203,
+          "type": "urn:miot-spec-v2:property:color-temperature:0000000F:yeelink-ceiling4:1",
+          "description": "Color Temperature",
+          "format": "uint32",
+          "access": [
+            "read",
+            "write"
+          ],
+          "unit": "kelvin",
+          "value-range": [
+            1700,
+            6500,
+            1
+          ]
+        },
+        {
+          "iid": 204,
+          "type": "urn:miot-spec-v2:property:color:0000000E:yeelink-ceiling4:1",
+          "description": "Color",
+          "format": "uint32",
+          "access": [
+            "read",
+            "write"
+          ],
+          "unit": "rgb",
+          "value-range": [
+            1,
+            16777215,
+            1
+          ]
+        }
+      ]
+    }
   ]
 }
\ No newline at end of file
diff --git a/custom_components/xiaomi_home/miot/specs/spec_filter.yaml b/custom_components/xiaomi_home/miot/specs/spec_filter.yaml
index cb614fd..77f302c 100644
--- a/custom_components/xiaomi_home/miot/specs/spec_filter.yaml
+++ b/custom_components/xiaomi_home/miot/specs/spec_filter.yaml
@@ -5,6 +5,9 @@ urn:miot-spec-v2:device:air-purifier:0000A007:zhimi-ma4:
   - 15.*
   services:
   - '10'
+urn:miot-spec-v2:device:airer:0000A00D:hyd-lyjpro:
+  properties:
+  - '3.2'
 urn:miot-spec-v2:device:curtain:0000A00C:lumi-hmcn01:
   properties:
   - '5.1'
@@ -41,6 +44,3 @@ urn:miot-spec-v2:device:motion-sensor:0000A014:xiaomi-pir1:
 urn:miot-spec-v2:device:router:0000A036:xiaomi-rd03:
   services:
   - '*'
-urn:miot-spec-v2:device:airer:0000A00D:hyd-lyjpro:
-  properties:
-  - '3.2'
diff --git a/custom_components/xiaomi_home/miot/specs/spec_modify.yaml b/custom_components/xiaomi_home/miot/specs/spec_modify.yaml
index cb24026..d3a7010 100644
--- a/custom_components/xiaomi_home/miot/specs/spec_modify.yaml
+++ b/custom_components/xiaomi_home/miot/specs/spec_modify.yaml
@@ -9,6 +9,13 @@ urn:miot-spec-v2:device:air-conditioner:0000A004:xiaomi-m9:6:
 urn:miot-spec-v2:device:air-monitor:0000A008:cgllc-s1:1:
   prop.2.5:
     name: voc-density
+urn:miot-spec-v2:device:airer:0000A00D:hyd-lyjpro:1:
+  prop.2.3:
+    name: current-position-a
+  prop.2.8:
+    name: target-position-a
+  prop.2.9:
+    name: target-position-b
 urn:miot-spec-v2:device:airer:0000A00D:hyd-znlyj5:1:
   prop.2.3:
     value-range:
@@ -145,10 +152,3 @@ urn:miot-spec-v2:device:water-purifier:0000A013:roswan-lte01:1:0000D05A:
     unit: ppm
   prop.4.2:
     unit: ppm
-urn:miot-spec-v2:device:airer:0000A00D:hyd-lyjpro:1:
-  prop.2.3:
-    name: current-position-a
-  prop.2.8:
-    name: target-position-a
-  prop.2.9:
-    name: target-position-b