diff --git a/custom_components/xiaomi_home/miot/specs/spec_add.json b/custom_components/xiaomi_home/miot/specs/spec_add.json
index 8d14aec..6ee9fbb 100644
--- a/custom_components/xiaomi_home/miot/specs/spec_add.json
+++ b/custom_components/xiaomi_home/miot/specs/spec_add.json
@@ -1,5 +1,23 @@
 {
   "urn:miot-spec-v2:device:air-conditioner:0000A004:090615-ktf:1": [
+    {
+      "iid": 2,
+      "type": "urn:miot-spec-v2:service:switch:0000780C:090615-ktf:1",
+      "description": "AC Switch",
+      "properties": [
+        {
+          "iid": 1,
+          "type": "urn:miot-spec-v2:property:on:00000006:090615-ktf:1",
+          "description": "Switch Status",
+          "format": "bool",
+          "access": [
+            "read",
+            "write",
+            "notify"
+          ]
+        }
+      ]
+    },
     {
       "iid": 4,
       "type": "urn:miot-spec-v2:service:environment:0000780A:090615-ktf:1",