diff --git a/custom_components/hitachi_yutaki/config_flow.py b/custom_components/hitachi_yutaki/config_flow.py
index bfe07eb..2647a3b 100644
--- a/custom_components/hitachi_yutaki/config_flow.py
+++ b/custom_components/hitachi_yutaki/config_flow.py
@@ -29,14 +29,30 @@
 
 _LOGGER = logging.getLogger(__name__)
 
-STEP_USER_DATA_SCHEMA = vol.Schema(
+# Schema for mode selection (simple/advanced)
+MODE_SCHEMA = vol.Schema(
+    {
+        vol.Required("advanced_mode", default=False): bool,
+    }
+)
+
+# Basic schema with essential options only
+BASE_SCHEMA = vol.Schema(
     {
         vol.Required(CONF_HOST): str,
+        vol.Optional(CONF_NAME, default=DEFAULT_NAME): str,
+    }
+)
+
+# Advanced schema with all available options
+ADVANCED_SCHEMA = vol.Schema(
+    {
+        vol.Required(CONF_HOST): str,
+        vol.Optional(CONF_NAME, default=DEFAULT_NAME): str,
         vol.Required(CONF_PORT, default=DEFAULT_PORT): cv.port,
         vol.Required(CONF_SLAVE, default=DEFAULT_SLAVE): vol.All(
             cv.positive_int, vol.Range(min=1, max=247)
         ),
-        vol.Optional(CONF_NAME, default=DEFAULT_NAME): str,
         vol.Optional(
             CONF_SCAN_INTERVAL, default=DEFAULT_SCAN_INTERVAL
         ): cv.positive_int,
@@ -50,18 +66,63 @@ class HitachiYutakiConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
 
+    def __init__(self):
+        """Initialize the config flow."""
+        # Store the mode choice and user input throughout the flow
+        self.advanced_mode = False
+        self.user_input = None
+
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
     ) -> FlowResult:
-        """Handle the initial step."""
+        """Initial step - redirect to mode selection."""
+        return self.async_show_form(
+            step_id="choose_mode",
+            data_schema=MODE_SCHEMA,
+        )
+
+    async def async_step_choose_mode(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Let user choose between simple and advanced configuration mode."""
+        if user_input is not None:
+            # Store the mode choice and move to configuration step
+            self.advanced_mode = user_input["advanced_mode"]
+            return await self.async_step_configure()
+
+        return self.async_show_form(
+            step_id="choose_mode",
+            data_schema=MODE_SCHEMA,
+        )
+
+    async def async_step_configure(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the configuration step."""
         errors: dict[str, str] = {}
+        # Select schema based on chosen mode
+        schema = ADVANCED_SCHEMA if self.advanced_mode else BASE_SCHEMA
 
         if user_input is None:
+            # Show the form if no user input
             return self.async_show_form(
-                step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+                step_id="configure",
+                data_schema=schema,
+                errors=errors,
             )
 
+        # If in simple mode, add default values for advanced options
+        if not self.advanced_mode:
+            user_input = {
+                **user_input,
+                CONF_PORT: DEFAULT_PORT,
+                CONF_SLAVE: DEFAULT_SLAVE,
+                CONF_SCAN_INTERVAL: DEFAULT_SCAN_INTERVAL,
+                "dev_mode": False,
+            }
+
         try:
+            # Try to connect to the Modbus device
             from pymodbus.client import ModbusTcpClient
             from pymodbus.exceptions import ModbusException
 
@@ -73,11 +134,11 @@ async def async_step_user(
             if not client.connect():
                 errors["base"] = "cannot_connect"
                 return self.async_show_form(
-                    step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+                    step_id="configure", data_schema=schema, errors=errors
                 )
 
             try:
-                # Check unit model
+                # Verify the device by checking unit model
                 result = await self.hass.async_add_executor_job(
                     client.read_holding_registers,
                     REGISTER_UNIT_MODEL,
@@ -88,10 +149,10 @@ async def async_step_user(
                 if result.isError():
                     errors["base"] = "invalid_slave"
                     return self.async_show_form(
-                        step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+                        step_id="configure", data_schema=schema, errors=errors
                     )
 
-                # Check central control mode
+                # Check if central control mode is correct
                 mode_result = await self.hass.async_add_executor_job(
                     client.read_holding_registers,
                     REGISTER_CENTRAL_CONTROL_MODE,
@@ -102,16 +163,16 @@ async def async_step_user(
                 if mode_result.isError():
                     errors["base"] = "modbus_error"
                     return self.async_show_form(
-                        step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+                        step_id="configure", data_schema=schema, errors=errors
                     )
 
                 if mode_result.registers[0] != CENTRAL_CONTROL_MODE_MAP["air"]:
                     errors["base"] = "invalid_central_control_mode"
                     return self.async_show_form(
-                        step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+                        step_id="configure", data_schema=schema, errors=errors
                     )
 
-                # Create entry if everything is OK
+                # Create entry if all validations pass
                 await self.async_set_unique_id(
                     f"{user_input[CONF_HOST]}_{user_input[CONF_SLAVE]}"
                 )
@@ -135,5 +196,5 @@ async def async_step_user(
             errors["base"] = "unknown"
 
         return self.async_show_form(
-            step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+            step_id="configure", data_schema=schema, errors=errors
         )