diff --git a/custom_components/lelight/__init__.py b/custom_components/lelight/__init__.py
index 7b980ca..3d4ab88 100644
--- a/custom_components/lelight/__init__.py
+++ b/custom_components/lelight/__init__.py
@@ -1,14 +1,93 @@
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers import (
+    device_registry as dr,
+    entity_registry as er,
+)
 
-from .const import DOMAIN
+from .const import (
+    CONF_GROUP_ID,
+    CONF_GROUP_NAME,
+    CONF_LIGHT_MODE,
+    DOMAIN,
+    LIGHT_MODE_COLOR_TEMP,
+    make_entity_unique_id,
+    LEGACY_ENTITY_UNIQUE_ID,
+)
 from .light import LeLight
 
 PLATFORMS: list[str] = ["light"]
 
+CONFIG_ENTRY_VERSION = 2
+
+
+async def async_migrate_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Migrate old config entries."""
+
+    if entry.version > CONFIG_ENTRY_VERSION:
+        return False
+
+    if entry.version == 1:
+        data = dict(entry.data)
+
+        data.setdefault(CONF_LIGHT_MODE, LIGHT_MODE_COLOR_TEMP)
+        data.setdefault(CONF_GROUP_ID, 0)
+        data.setdefault(CONF_GROUP_NAME, "")
+
+        host = data["host"]
+        group_id = data[CONF_GROUP_ID]
+
+        new_unique_id = make_entity_unique_id(host, group_id)
+
+        entity_registry = er.async_get(hass)
+
+        for entity in er.async_entries_for_config_entry(
+                entity_registry,
+                entry.entry_id,
+        ):
+            if entity.unique_id == LEGACY_ENTITY_UNIQUE_ID:
+                entity_registry.async_update_entity(
+                    entity.entity_id,
+                    new_unique_id=new_unique_id,
+                )
+
+        device_registry = dr.async_get(hass)
+        old_identifier = (DOMAIN, host)
+        new_identifier = (DOMAIN, f"{host}_{group_id}")
+
+        for device in dr.async_entries_for_config_entry(
+                device_registry,
+                entry.entry_id,
+        ):
+            if old_identifier not in device.identifiers:
+                continue
+
+            identifiers = set(device.identifiers)
+            identifiers.remove(old_identifier)
+            identifiers.add(new_identifier)
+
+            device_registry.async_update_device(
+                device.id,
+                new_identifiers=identifiers,
+            )
+
+        hass.config_entries.async_update_entry(
+            entry,
+            data=data,
+            version=CONFIG_ENTRY_VERSION,
+        )
+
+    return True
+
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
-    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = LeLight(entry.data["host"])
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = LeLight(
+        entry.data["host"],
+        entry.data.get(CONF_LIGHT_MODE, LIGHT_MODE_COLOR_TEMP),
+        entry.data.get(CONF_GROUP_ID, 0),
+        entry.data.get(CONF_GROUP_NAME, ""),
+    )
+
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
     return True
 
diff --git a/custom_components/lelight/config_flow.py b/custom_components/lelight/config_flow.py
index 20623df..7dea88b 100644
--- a/custom_components/lelight/config_flow.py
+++ b/custom_components/lelight/config_flow.py
@@ -1,28 +1,80 @@
 from logging import getLogger
+from hashlib import sha1
 from typing import Any
 
 import voluptuous as vol
 from homeassistant import config_entries, exceptions
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.selector import (
+    NumberSelector,
+    NumberSelectorConfig,
+    NumberSelectorMode,
+    SelectSelector,
+    SelectSelectorConfig,
+)
 
-from .const import DOMAIN
+from .const import (
+    CONF_GROUP_ID,
+    CONF_GROUP_NAME,
+    CONF_LIGHT_MODE,
+    DOMAIN,
+    LIGHT_MODE_BRIGHTNESS,
+    LIGHT_MODE_COLOR_TEMP,
+)
 
 logger = getLogger(DOMAIN)
 
-DATA_SCHEMA = vol.Schema({vol.Required("host"): str})
+DATA_SCHEMA = vol.Schema(
+    {
+        vol.Required("host"): str,
+        vol.Optional(CONF_GROUP_NAME, default=""): str,
+        vol.Optional(CONF_GROUP_ID, default=0): NumberSelector(
+            NumberSelectorConfig(
+                min=0,
+                max=255,
+                step=1,
+                mode=NumberSelectorMode.BOX,
+            )
+        ),
+        vol.Required(
+            CONF_LIGHT_MODE,
+            default=LIGHT_MODE_BRIGHTNESS,
+        ): SelectSelector(
+            SelectSelectorConfig(
+                options=[
+                    LIGHT_MODE_BRIGHTNESS,
+                    LIGHT_MODE_COLOR_TEMP,
+                ],
+                translation_key="light_type",
+            )
+        ),
+    }
+)
+
+
+def group_id_from_name(group_name: str) -> int:
+    group_hash = sha1(group_name.strip().lower().encode("utf-8")).digest()
+    return group_hash[0] % 255 + 1
 
 
 async def validate_input(hass: HomeAssistant, data: dict) -> dict[str, Any]:
-    if len(data["host"].strip()) != 8:
+    data["host"] = data["host"].strip()
+    data[CONF_GROUP_NAME] = data.get(CONF_GROUP_NAME, "").strip()
+
+    if len(data["host"]) != 8:
         raise InvalidHost("Host name must be 8 characters long")
 
-    return {"title": data["host"].strip()}
+    if data.get(CONF_GROUP_ID, 0) == 0 and data[CONF_GROUP_NAME]:
+        data[CONF_GROUP_ID] = int(data.get(CONF_GROUP_ID, 0))
+        data[CONF_GROUP_ID] = group_id_from_name(data[CONF_GROUP_NAME])
+
+    return {"title": data["host"]}
 
 
 class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     """Handle a config flow for Hello World."""
 
-    VERSION = 1
+    VERSION = 2
     CONNECTION_CLASS = config_entries.CONN_CLASS_LOCAL_PUSH
 
     async def async_step_user(self, user_input=None):
diff --git a/custom_components/lelight/connector.py b/custom_components/lelight/connector.py
index 86fb256..4b955ec 100644
--- a/custom_components/lelight/connector.py
+++ b/custom_components/lelight/connector.py
@@ -1,5 +1,4 @@
 from abc import abstractmethod
-from asyncio import sleep
 
 from .encoder import Command, Encryptor, Message
 
@@ -15,14 +14,15 @@ async def close(self):
 
 
 class App:
-    def __init__(self, mac: str, backend: BtBackend):
+    def __init__(self, mac: str, backend: BtBackend, group_id: int = 0):
         _mac = [int.from_bytes(x, "big", signed=True) for x in
                 (x.to_bytes(1, "little", signed=False) for x in bytearray.fromhex(mac))]
         self.encryptor = Encryptor(_mac)
         self.backend = backend
+        self.group_id = group_id
 
     def _make_message(self, command: Command) -> Message:
-        return self.encryptor.message(command)
+        return self.encryptor.message(command, self.group_id)
 
     async def send(self, command: Command):
         await self.backend.send_message(self._make_message(command))
diff --git a/custom_components/lelight/connector_bless.py b/custom_components/lelight/connector_bless.py
index 05df281..86a11a8 100644
--- a/custom_components/lelight/connector_bless.py
+++ b/custom_components/lelight/connector_bless.py
@@ -18,7 +18,7 @@ class BlessServer(BlessServerBlueZDBus):
     async def setup(self):
         await super().setup()
         self.adv = BlueZLEAdvertisement(Type.BROADCAST, 1, self.app)
-        self.adv._tx_power = 35
+        self.adv._tx_power = 20
 
         self.app.advertisements = [self.adv]
         self.bus.export(self.adv.path, self.adv)
diff --git a/custom_components/lelight/const.py b/custom_components/lelight/const.py
index bc36a5f..68114a2 100644
--- a/custom_components/lelight/const.py
+++ b/custom_components/lelight/const.py
@@ -1 +1,12 @@
 DOMAIN = "lelight"
+LEGACY_ENTITY_UNIQUE_ID = "lelight_light"
+
+CONF_LIGHT_MODE = "light_mode"
+CONF_GROUP_ID = "group_id"
+CONF_GROUP_NAME = "group_name"
+LIGHT_MODE_BRIGHTNESS = "brightness"
+LIGHT_MODE_COLOR_TEMP = "color_temp"
+
+
+def make_entity_unique_id(host: str, group_id: int) -> str:
+    return f"{DOMAIN}_{host}_{group_id}"
diff --git a/custom_components/lelight/encoder.py b/custom_components/lelight/encoder.py
index 2ca9314..b9a063e 100644
--- a/custom_components/lelight/encoder.py
+++ b/custom_components/lelight/encoder.py
@@ -28,11 +28,11 @@ def b(x: int) -> int:
         return x & -1
 
 
-def list_to_bytes_str(x: [int]) -> str:
+def list_to_bytes_str(x: list[int]) -> str:
     return "".join(int_to_bytes(i).hex() for i in x).upper()
 
 
-def int_list_to_hex(x: [int]) -> bytearray:
+def int_list_to_hex(x: list[int]) -> bytearray:
     return bytearray.fromhex(list_to_bytes_str(x))
 
 
@@ -44,7 +44,7 @@ def checksum(data: List[int]) -> int:
     return byte
 
 
-def encode(salt: int, data: List[int]) -> [int]:
+def encode(salt: int, data: List[int]) -> list[int]:
     res = [0] * len(data)
     for i in range(len(data)):
         res[i] = data[i] if i < 10 else b(data[i] ^ ABC[salt & 15])
@@ -54,7 +54,7 @@ def encode(salt: int, data: List[int]) -> [int]:
 @dataclass
 class Command:
     command: int
-    value: [int]
+    value: list[int]
 
 
 @dataclass
@@ -81,8 +81,8 @@ def __init__(self, mac=None):
         self.messageId = 0
         self.messagesSalt = mac
 
-    def message(self, command: Command):
-        data = self._message(command.command, command.value)
+    def message(self, command: Command, group_id: int = 0):
+        data = self._message(command.command, command.value, group_id)
         return Message(data=data)
 
     def _message(self, command: int, message: List[int], group_id: int = 0):
@@ -101,7 +101,7 @@ def _message(self, command: int, message: List[int], group_id: int = 0):
         if group_id == -1:
             group_id = 0
 
-        data[6] = group_id
+        data[6] = b(group_id)
         data[7] = b(self.messageId)
         data[8] = b(command)
         data[9] = len(message)
diff --git a/custom_components/lelight/light.py b/custom_components/lelight/light.py
index ec1b619..64283e9 100644
--- a/custom_components/lelight/light.py
+++ b/custom_components/lelight/light.py
@@ -10,9 +10,10 @@
 )
 from homeassistant.helpers.entity import DeviceInfo
 
+from . import make_entity_unique_id
 from .connector import App
 from .connector_bless import BlessBackend
-from .const import DOMAIN
+from .const import DOMAIN, LIGHT_MODE_COLOR_TEMP
 from .encoder import Commands
 
 logger = getLogger(DOMAIN)
@@ -33,16 +34,15 @@ class LeLight(LightEntity):
     min_color_temp_kelvin = 3000
     max_color_temp_kelvin = 6400
 
-    unique_id = "lelight_light"
-    color_mode = ColorMode.COLOR_TEMP
-    supported_color_modes = {
-        ColorMode.COLOR_TEMP,
-    }
-
-    def __init__(self, host: str) -> None:
+    def __init__(
+        self, host: str, light_mode: str, group_id: int, group_name: str
+    ) -> None:
         self._host = host
+        self._light_mode = light_mode
+        self._group_id = group_id
+        self._group_name = group_name
         self._state = False
-        self.app = App(host, BlessBackend())
+        self.app = App(host, BlessBackend(), group_id)
 
         # brightness from 0 to 1000 (device format)
         self._brightness = 1000
@@ -52,15 +52,35 @@ def __init__(self, host: str) -> None:
 
     @cached_property
     def name(self) -> str:
+        if self._group_name:
+            return f"LeLight {self._group_name}"
         return f"LeLight {self._host}"
 
+    @property
+    def unique_id(self) -> str:
+        return make_entity_unique_id(self._host, self._group_id)
+
+    @property
+    def color_mode(self) -> ColorMode:
+        if self._light_mode == LIGHT_MODE_COLOR_TEMP:
+            return ColorMode.COLOR_TEMP
+        return ColorMode.BRIGHTNESS
+
+    @property
+    def supported_color_modes(self) -> set[ColorMode]:
+        if self._light_mode == LIGHT_MODE_COLOR_TEMP:
+            return {ColorMode.COLOR_TEMP}
+        return {ColorMode.BRIGHTNESS}
+
     @property
     def brightness(self):
         return normalize_value(self._brightness, 1000, 255)
 
     @property
     def color_temp_kelvin(self) -> int | None:
-        return self._temp
+        if self._light_mode == LIGHT_MODE_COLOR_TEMP:
+            return self._temp
+        return None
 
     async def async_turn_on(self, **kwargs: Any) -> None:
         if not self._state:
@@ -72,9 +92,11 @@ async def async_turn_on(self, **kwargs: Any) -> None:
             self._brightness = normalize_value(kwargs[ATTR_BRIGHTNESS], 255, 1000)
             await self.app.send(Commands.bright(self._brightness))
 
-        if ATTR_COLOR_TEMP_KELVIN in kwargs:
+        if (
+            self._light_mode == LIGHT_MODE_COLOR_TEMP
+            and ATTR_COLOR_TEMP_KELVIN in kwargs
+        ):
             self._temp = kwargs[ATTR_COLOR_TEMP_KELVIN]
-
             await self.app.send(Commands.temp(self._temp))
 
     async def async_turn_off(self, **kwargs: Any) -> None:
@@ -93,13 +115,14 @@ def is_on(self) -> bool:
 
     @cached_property
     def device_info(self) -> DeviceInfo | None:
-        return {
-            "identifiers": {(DOMAIN, self._host)},
-            "name": f"lelight lamp {self._host}",
-            "sw_version": "none",
-            "model": "lelight lamp",
-            "manufacturer": "lelight",
-        }
+        return DeviceInfo(
+            identifiers={(DOMAIN, f"{self._host}_{self._group_id}")},
+            name=f"lelight lamp {self._host} group {self._group_id}",
+            suggested_area=self._group_name or None,
+            sw_version="none",
+            model="lelight lamp",
+            manufacturer="lelight",
+        )
 
     async def async_removed_from_registry(self) -> None:
         await self.app.backend.close()
diff --git a/custom_components/lelight/manifest.json b/custom_components/lelight/manifest.json
index 050c43c..5288e31 100644
--- a/custom_components/lelight/manifest.json
+++ b/custom_components/lelight/manifest.json
@@ -6,15 +6,15 @@
   ],
   "config_flow": true,
   "dependencies": [],
-  "documentation": "https://github.com/v1ack/ha-lelight/README.md",
+  "documentation": "https://github.com/v1ack/lelight/blob/master/README.md",
   "iot_class": "local_push",
-  "issue_tracker": "https://github.com/v1ack/ha-lelight/issues",
+  "issue_tracker": "https://github.com/v1ack/lelight/issues",
   "loggers": [
     "lelight"
   ],
   "requirements": [
-    "bless~=0.2.6",
+    "bless==0.3.0",
     "dbus-next==0.2.3"
   ],
-  "version": "0.3.0"
+  "version": "0.4.0"
 }
diff --git a/custom_components/lelight/strings.json b/custom_components/lelight/strings.json
deleted file mode 100644
index 75dc2bb..0000000
--- a/custom_components/lelight/strings.json
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-  "title": "LeLight ble connection",
-  "config": {
-    "step": {
-      "user": {
-        "title": "Init connection",
-        "data": {
-          "host": "ID from LeLight App"
-        }
-      }
-    }
-  }
-}
diff --git a/custom_components/lelight/translations/en.json b/custom_components/lelight/translations/en.json
index d27ceda..12ff606 100644
--- a/custom_components/lelight/translations/en.json
+++ b/custom_components/lelight/translations/en.json
@@ -3,11 +3,22 @@
   "config": {
     "step": {
       "user": {
-        "title": "Init connection",
+        "title": "Set up LeLight",
         "data": {
-          "host": "ID from LeLight App"
+          "host": "ID from LeLight app",
+          "group_name": "Room or group name",
+          "group_id": "Group ID",
+          "light_mode": "Light type"
         }
       }
     }
+  },
+  "selector": {
+    "light_type": {
+      "options": {
+        "brightness": "Brightness only",
+        "color_temp": "Brightness and color temperature"
+      }
+    }
   }
-}
\ No newline at end of file
+}
diff --git a/custom_components/lelight/translations/ru.json b/custom_components/lelight/translations/ru.json
new file mode 100644
index 0000000..7e79109
--- /dev/null
+++ b/custom_components/lelight/translations/ru.json
@@ -0,0 +1,23 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "title": "Настройка LeLight",
+        "data": {
+          "host": "ID из приложения LeLight",
+          "group_name": "Название комнаты или группы",
+          "group_id": "ID группы",
+          "light_mode": "Тип лампы"
+        }
+      }
+    }
+  },
+  "selector": {
+    "light_type": {
+      "options": {
+        "brightness": "Только яркость",
+        "color_temp": "Яркость и цветовая температура"
+      }
+    }
+  }
+}
diff --git a/custom_components/lelight/translations/zh-Hans.json b/custom_components/lelight/translations/zh-Hans.json
new file mode 100644
index 0000000..6ce3cfd
--- /dev/null
+++ b/custom_components/lelight/translations/zh-Hans.json
@@ -0,0 +1,23 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "title": "设置 LeLight",
+        "data": {
+          "host": "LeLight 应用中的 ID",
+          "group_name": "房间或分组名称",
+          "group_id": "分组 ID",
+          "light_mode": "灯具类型"
+        }
+      }
+    }
+  },
+  "selector": {
+    "light_type": {
+      "options": {
+        "brightness": "调光灯",
+        "color_temp": "色温灯"
+      }
+    }
+  }
+}