diff --git a/.coveragerc b/.coveragerc
index bec37425416..2aabc0d8028 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -829,7 +829,17 @@ omit =
     homeassistant/components/xfinity/device_tracker.py
     homeassistant/components/xiaomi/camera.py
     homeassistant/components/xiaomi_aqara/*
-    homeassistant/components/xiaomi_miio/*
+    homeassistant/components/xiaomi_miio/__init__.py
+    homeassistant/components/xiaomi_miio/air_quality.py
+    homeassistant/components/xiaomi_miio/alarm_control_panel.py
+    homeassistant/components/xiaomi_miio/device_tracker.py
+    homeassistant/components/xiaomi_miio/fan.py
+    homeassistant/components/xiaomi_miio/gateway.py
+    homeassistant/components/xiaomi_miio/light.py
+    homeassistant/components/xiaomi_miio/remote.py
+    homeassistant/components/xiaomi_miio/sensor.py
+    homeassistant/components/xiaomi_miio/switch.py
+    homeassistant/components/xiaomi_miio/vacuum.py
     homeassistant/components/xiaomi_tv/media_player.py
     homeassistant/components/xmpp/notify.py
     homeassistant/components/xs1/*
diff --git a/homeassistant/components/xiaomi_miio/__init__.py b/homeassistant/components/xiaomi_miio/__init__.py
index 9abc871b9b4..0dd03e42e7d 100644
--- a/homeassistant/components/xiaomi_miio/__init__.py
+++ b/homeassistant/components/xiaomi_miio/__init__.py
@@ -1 +1,69 @@
 """Support for Xiaomi Miio."""
+import logging
+
+from homeassistant import config_entries, core
+from homeassistant.const import CONF_HOST, CONF_TOKEN
+from homeassistant.helpers import device_registry as dr
+
+from .config_flow import CONF_FLOW_TYPE, CONF_GATEWAY
+from .const import DOMAIN
+from .gateway import ConnectXiaomiGateway
+
+_LOGGER = logging.getLogger(__name__)
+
+GATEWAY_PLATFORMS = ["alarm_control_panel"]
+
+
+async def async_setup(hass: core.HomeAssistant, config: dict):
+    """Set up the Xiaomi Miio component."""
+    return True
+
+
+async def async_setup_entry(
+    hass: core.HomeAssistant, entry: config_entries.ConfigEntry
+):
+    """Set up the Xiaomi Miio components from a config entry."""
+    hass.data[DOMAIN] = {}
+    if entry.data[CONF_FLOW_TYPE] == CONF_GATEWAY:
+        if not await async_setup_gateway_entry(hass, entry):
+            return False
+
+    return True
+
+
+async def async_setup_gateway_entry(
+    hass: core.HomeAssistant, entry: config_entries.ConfigEntry
+):
+    """Set up the Xiaomi Gateway component from a config entry."""
+    host = entry.data[CONF_HOST]
+    token = entry.data[CONF_TOKEN]
+    name = entry.title
+    gateway_id = entry.data["gateway_id"]
+
+    # Connect to gateway
+    gateway = ConnectXiaomiGateway(hass)
+    if not await gateway.async_connect_gateway(host, token):
+        return False
+    gateway_info = gateway.gateway_info
+
+    hass.data[DOMAIN][entry.entry_id] = gateway.gateway_device
+
+    gateway_model = f"{gateway_info.model}-{gateway_info.hardware_version}"
+
+    device_registry = await dr.async_get_registry(hass)
+    device_registry.async_get_or_create(
+        config_entry_id=entry.entry_id,
+        connections={(dr.CONNECTION_NETWORK_MAC, gateway_info.mac_address)},
+        identifiers={(DOMAIN, gateway_id)},
+        manufacturer="Xiaomi",
+        name=name,
+        model=gateway_model,
+        sw_version=gateway_info.firmware_version,
+    )
+
+    for component in GATEWAY_PLATFORMS:
+        hass.async_create_task(
+            hass.config_entries.async_forward_entry_setup(entry, component)
+        )
+
+    return True
diff --git a/homeassistant/components/xiaomi_miio/alarm_control_panel.py b/homeassistant/components/xiaomi_miio/alarm_control_panel.py
new file mode 100644
index 00000000000..dccd94dc963
--- /dev/null
+++ b/homeassistant/components/xiaomi_miio/alarm_control_panel.py
@@ -0,0 +1,150 @@
+"""Support for Xiomi Gateway alarm control panels."""
+
+from functools import partial
+import logging
+
+from miio import DeviceException
+
+from homeassistant.components.alarm_control_panel import (
+    SUPPORT_ALARM_ARM_AWAY,
+    AlarmControlPanelEntity,
+)
+from homeassistant.const import (
+    STATE_ALARM_ARMED_AWAY,
+    STATE_ALARM_ARMING,
+    STATE_ALARM_DISARMED,
+)
+
+from .const import DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+XIAOMI_STATE_ARMED_VALUE = "on"
+XIAOMI_STATE_DISARMED_VALUE = "off"
+XIAOMI_STATE_ARMING_VALUE = "oning"
+
+
+async def async_setup_entry(hass, config_entry, async_add_entities):
+    """Set up the Xiaomi Gateway Alarm from a config entry."""
+    entities = []
+    gateway = hass.data[DOMAIN][config_entry.entry_id]
+    entity = XiaomiGatewayAlarm(
+        gateway,
+        f"{config_entry.title} Alarm",
+        config_entry.data["model"],
+        config_entry.data["mac"],
+        config_entry.data["gateway_id"],
+    )
+    entities.append(entity)
+    async_add_entities(entities)
+
+
+class XiaomiGatewayAlarm(AlarmControlPanelEntity):
+    """Representation of the XiaomiGatewayAlarm."""
+
+    def __init__(
+        self, gateway_device, gateway_name, model, mac_address, gateway_device_id
+    ):
+        """Initialize the entity."""
+        self._gateway = gateway_device
+        self._name = gateway_name
+        self._gateway_device_id = gateway_device_id
+        self._unique_id = f"{model}-{mac_address}"
+        self._icon = "mdi:shield-home"
+        self._available = None
+        self._state = None
+
+    @property
+    def unique_id(self):
+        """Return an unique ID."""
+        return self._unique_id
+
+    @property
+    def device_id(self):
+        """Return the device id of the gateway."""
+        return self._gateway_device_id
+
+    @property
+    def device_info(self):
+        """Return the device info of the gateway."""
+        return {
+            "identifiers": {(DOMAIN, self._gateway_device_id)},
+        }
+
+    @property
+    def name(self):
+        """Return the name of this entity, if any."""
+        return self._name
+
+    @property
+    def icon(self):
+        """Return the icon to use for device if any."""
+        return self._icon
+
+    @property
+    def available(self):
+        """Return true when state is known."""
+        return self._available
+
+    @property
+    def state(self):
+        """Return the state of the device."""
+        return self._state
+
+    @property
+    def supported_features(self) -> int:
+        """Return the list of supported features."""
+        return SUPPORT_ALARM_ARM_AWAY
+
+    async def _try_command(self, mask_error, func, *args, **kwargs):
+        """Call a device command handling error messages."""
+        try:
+            result = await self.hass.async_add_executor_job(
+                partial(func, *args, **kwargs)
+            )
+            _LOGGER.debug("Response received from miio device: %s", result)
+        except DeviceException as exc:
+            _LOGGER.error(mask_error, exc)
+
+    async def async_alarm_arm_away(self, code=None):
+        """Turn on."""
+        await self._try_command(
+            "Turning the alarm on failed: %s", self._gateway.alarm.on
+        )
+
+    async def async_alarm_disarm(self, code=None):
+        """Turn off."""
+        await self._try_command(
+            "Turning the alarm off failed: %s", self._gateway.alarm.off
+        )
+
+    async def async_update(self):
+        """Fetch state from the device."""
+        try:
+            state = await self.hass.async_add_executor_job(self._gateway.alarm.status)
+        except DeviceException as ex:
+            self._available = False
+            _LOGGER.error("Got exception while fetching the state: %s", ex)
+            return
+
+        _LOGGER.debug("Got new state: %s", state)
+
+        self._available = True
+
+        if state == XIAOMI_STATE_ARMED_VALUE:
+            self._state = STATE_ALARM_ARMED_AWAY
+        elif state == XIAOMI_STATE_DISARMED_VALUE:
+            self._state = STATE_ALARM_DISARMED
+        elif state == XIAOMI_STATE_ARMING_VALUE:
+            self._state = STATE_ALARM_ARMING
+        else:
+            _LOGGER.warning(
+                "New state (%s) doesn't match expected values: %s/%s/%s",
+                state,
+                XIAOMI_STATE_ARMED_VALUE,
+                XIAOMI_STATE_DISARMED_VALUE,
+                XIAOMI_STATE_ARMING_VALUE,
+            )
+            self._state = None
+
+        _LOGGER.debug("State value: %s", self._state)
diff --git a/homeassistant/components/xiaomi_miio/config_flow.py b/homeassistant/components/xiaomi_miio/config_flow.py
new file mode 100644
index 00000000000..092f5d85d30
--- /dev/null
+++ b/homeassistant/components/xiaomi_miio/config_flow.py
@@ -0,0 +1,82 @@
+"""Config flow to configure Xiaomi Miio."""
+import logging
+
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.const import CONF_HOST, CONF_NAME, CONF_TOKEN
+
+# pylint: disable=unused-import
+from .const import DOMAIN
+from .gateway import ConnectXiaomiGateway
+
+_LOGGER = logging.getLogger(__name__)
+
+CONF_FLOW_TYPE = "config_flow_device"
+CONF_GATEWAY = "gateway"
+DEFAULT_GATEWAY_NAME = "Xiaomi Gateway"
+
+GATEWAY_CONFIG = vol.Schema(
+    {
+        vol.Required(CONF_HOST): str,
+        vol.Required(CONF_TOKEN): vol.All(str, vol.Length(min=32, max=32)),
+        vol.Optional(CONF_NAME, default=DEFAULT_GATEWAY_NAME): str,
+    }
+)
+
+CONFIG_SCHEMA = vol.Schema({vol.Optional(CONF_GATEWAY, default=False): bool})
+
+
+class XiaomiMiioFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a Xiaomi Miio config flow."""
+
+    VERSION = 1
+    CONNECTION_CLASS = config_entries.CONN_CLASS_LOCAL_POLL
+
+    async def async_step_user(self, user_input=None):
+        """Handle a flow initialized by the user."""
+        errors = {}
+        if user_input is not None:
+            # Check which device needs to be connected.
+            if user_input[CONF_GATEWAY]:
+                return await self.async_step_gateway()
+
+            errors["base"] = "no_device_selected"
+
+        return self.async_show_form(
+            step_id="user", data_schema=CONFIG_SCHEMA, errors=errors
+        )
+
+    async def async_step_gateway(self, user_input=None):
+        """Handle a flow initialized by the user to configure a gateway."""
+        errors = {}
+        if user_input is not None:
+            host = user_input[CONF_HOST]
+            token = user_input[CONF_TOKEN]
+
+            # Try to connect to a Xiaomi Gateway.
+            connect_gateway_class = ConnectXiaomiGateway(self.hass)
+            await connect_gateway_class.async_connect_gateway(host, token)
+            gateway_info = connect_gateway_class.gateway_info
+
+            if gateway_info is not None:
+                unique_id = f"{gateway_info.model}-{gateway_info.mac_address}-gateway"
+                await self.async_set_unique_id(unique_id)
+                self._abort_if_unique_id_configured()
+                return self.async_create_entry(
+                    title=user_input[CONF_NAME],
+                    data={
+                        CONF_FLOW_TYPE: CONF_GATEWAY,
+                        CONF_HOST: host,
+                        CONF_TOKEN: token,
+                        "gateway_id": unique_id,
+                        "model": gateway_info.model,
+                        "mac": gateway_info.mac_address,
+                    },
+                )
+
+            errors["base"] = "connect_error"
+
+        return self.async_show_form(
+            step_id="gateway", data_schema=GATEWAY_CONFIG, errors=errors
+        )
diff --git a/homeassistant/components/xiaomi_miio/gateway.py b/homeassistant/components/xiaomi_miio/gateway.py
new file mode 100644
index 00000000000..2195c9eecdc
--- /dev/null
+++ b/homeassistant/components/xiaomi_miio/gateway.py
@@ -0,0 +1,47 @@
+"""Code to handle a Xiaomi Gateway."""
+import logging
+
+from miio import DeviceException, gateway
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class ConnectXiaomiGateway:
+    """Class to async connect to a Xiaomi Gateway."""
+
+    def __init__(self, hass):
+        """Initialize the entity."""
+        self._hass = hass
+        self._gateway_device = None
+        self._gateway_info = None
+
+    @property
+    def gateway_device(self):
+        """Return the class containing all connections to the gateway."""
+        return self._gateway_device
+
+    @property
+    def gateway_info(self):
+        """Return the class containing gateway info."""
+        return self._gateway_info
+
+    async def async_connect_gateway(self, host, token):
+        """Connect to the Xiaomi Gateway."""
+        _LOGGER.debug("Initializing with host %s (token %s...)", host, token[:5])
+        try:
+            self._gateway_device = gateway.Gateway(host, token)
+            self._gateway_info = await self._hass.async_add_executor_job(
+                self._gateway_device.info
+            )
+        except DeviceException:
+            _LOGGER.error(
+                "DeviceException during setup of xiaomi gateway with host %s", host
+            )
+            return False
+        _LOGGER.debug(
+            "%s %s %s detected",
+            self._gateway_info.model,
+            self._gateway_info.firmware_version,
+            self._gateway_info.hardware_version,
+        )
+        return True
diff --git a/homeassistant/components/xiaomi_miio/manifest.json b/homeassistant/components/xiaomi_miio/manifest.json
index 1db01321285..468389b4626 100644
--- a/homeassistant/components/xiaomi_miio/manifest.json
+++ b/homeassistant/components/xiaomi_miio/manifest.json
@@ -1,6 +1,7 @@
 {
   "domain": "xiaomi_miio",
-  "name": "Xiaomi miio",
+  "name": "Xiaomi Miio",
+  "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/xiaomi_miio",
   "requirements": ["construct==2.9.45", "python-miio==0.5.0.1"],
   "codeowners": ["@rytilahti", "@syssi"]
diff --git a/homeassistant/components/xiaomi_miio/strings.json b/homeassistant/components/xiaomi_miio/strings.json
new file mode 100644
index 00000000000..1562bbb6526
--- /dev/null
+++ b/homeassistant/components/xiaomi_miio/strings.json
@@ -0,0 +1,29 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "title": "Xiaomi Miio",
+        "description": "Select to which device you want to connect.",
+        "data": {
+          "gateway": "Connect to a Xiaomi Gateway"
+        }
+      },
+      "gateway": {
+        "title": "Connect to a Xiaomi Gateway",
+        "description": "You will need the API Token, see https://www.home-assistant.io/integrations/vacuum.xiaomi_miio/#retrieving-the-access-token for instructions.",
+        "data": {
+          "host": "IP adress",
+          "token": "API Token",
+          "name": "Name of the Gateway"
+        }
+      }
+    },
+    "error": {
+      "connect_error": "Failed to connect, please try again",
+      "no_device_selected": "No device selected, please select one device."
+    },
+    "abort": {
+      "already_configured": "Device is already configured"
+    }
+  }
+}
diff --git a/homeassistant/components/xiaomi_miio/translations/en.json b/homeassistant/components/xiaomi_miio/translations/en.json
new file mode 100644
index 00000000000..1562bbb6526
--- /dev/null
+++ b/homeassistant/components/xiaomi_miio/translations/en.json
@@ -0,0 +1,29 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "title": "Xiaomi Miio",
+        "description": "Select to which device you want to connect.",
+        "data": {
+          "gateway": "Connect to a Xiaomi Gateway"
+        }
+      },
+      "gateway": {
+        "title": "Connect to a Xiaomi Gateway",
+        "description": "You will need the API Token, see https://www.home-assistant.io/integrations/vacuum.xiaomi_miio/#retrieving-the-access-token for instructions.",
+        "data": {
+          "host": "IP adress",
+          "token": "API Token",
+          "name": "Name of the Gateway"
+        }
+      }
+    },
+    "error": {
+      "connect_error": "Failed to connect, please try again",
+      "no_device_selected": "No device selected, please select one device."
+    },
+    "abort": {
+      "already_configured": "Device is already configured"
+    }
+  }
+}
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index e17aefac636..636dab4de27 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -141,6 +141,7 @@ FLOWS = [
     "withings",
     "wled",
     "wwlln",
+    "xiaomi_miio",
     "zha",
     "zwave"
 ]
diff --git a/tests/components/xiaomi_miio/test_config_flow.py b/tests/components/xiaomi_miio/test_config_flow.py
new file mode 100644
index 00000000000..2c1411ded68
--- /dev/null
+++ b/tests/components/xiaomi_miio/test_config_flow.py
@@ -0,0 +1,126 @@
+"""Test the Xiaomi Miio config flow."""
+from unittest.mock import Mock
+
+from asynctest import patch
+from miio import DeviceException
+
+from homeassistant import config_entries
+from homeassistant.components.xiaomi_miio import config_flow, const
+from homeassistant.const import CONF_HOST, CONF_NAME, CONF_TOKEN
+
+TEST_HOST = "1.2.3.4"
+TEST_TOKEN = "12345678901234567890123456789012"
+TEST_NAME = "Test_Gateway"
+TEST_MODEL = "model5"
+TEST_MAC = "AB-CD-EF-GH-IJ-KL"
+TEST_GATEWAY_ID = f"{TEST_MODEL}-{TEST_MAC}-gateway"
+TEST_HARDWARE_VERSION = "AB123"
+TEST_FIRMWARE_VERSION = "1.2.3_456"
+
+
+def get_mock_info(
+    model=TEST_MODEL,
+    mac_address=TEST_MAC,
+    hardware_version=TEST_HARDWARE_VERSION,
+    firmware_version=TEST_FIRMWARE_VERSION,
+):
+    """Return a mock gateway info instance."""
+    gateway_info = Mock()
+    gateway_info.model = model
+    gateway_info.mac_address = mac_address
+    gateway_info.hardware_version = hardware_version
+    gateway_info.firmware_version = firmware_version
+
+    return gateway_info
+
+
+async def test_config_flow_step_user_no_device(hass):
+    """Test config flow, user step with no device selected."""
+    result = await hass.config_entries.flow.async_init(
+        const.DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "user"
+    assert result["errors"] == {}
+
+    result = await hass.config_entries.flow.async_configure(result["flow_id"], {},)
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "user"
+    assert result["errors"] == {"base": "no_device_selected"}
+
+
+async def test_config_flow_step_gateway_connect_error(hass):
+    """Test config flow, gateway connection error."""
+    result = await hass.config_entries.flow.async_init(
+        const.DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "user"
+    assert result["errors"] == {}
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], {config_flow.CONF_GATEWAY: True},
+    )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "gateway"
+    assert result["errors"] == {}
+
+    with patch(
+        "homeassistant.components.xiaomi_miio.gateway.gateway.Gateway.info",
+        side_effect=DeviceException({}),
+    ):
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_HOST: TEST_HOST, CONF_NAME: TEST_NAME, CONF_TOKEN: TEST_TOKEN},
+        )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "gateway"
+    assert result["errors"] == {"base": "connect_error"}
+
+
+async def test_config_flow_gateway_success(hass):
+    """Test a successful config flow."""
+    result = await hass.config_entries.flow.async_init(
+        const.DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "user"
+    assert result["errors"] == {}
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], {config_flow.CONF_GATEWAY: True},
+    )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "gateway"
+    assert result["errors"] == {}
+
+    mock_info = get_mock_info()
+
+    with patch(
+        "homeassistant.components.xiaomi_miio.gateway.gateway.Gateway.info",
+        return_value=mock_info,
+    ), patch(
+        "homeassistant.components.xiaomi_miio.async_setup_entry", return_value=True
+    ):
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_HOST: TEST_HOST, CONF_NAME: TEST_NAME, CONF_TOKEN: TEST_TOKEN},
+        )
+
+    assert result["type"] == "create_entry"
+    assert result["title"] == TEST_NAME
+    assert result["data"] == {
+        config_flow.CONF_FLOW_TYPE: config_flow.CONF_GATEWAY,
+        CONF_HOST: TEST_HOST,
+        CONF_TOKEN: TEST_TOKEN,
+        "gateway_id": TEST_GATEWAY_ID,
+        "model": TEST_MODEL,
+        "mac": TEST_MAC,
+    }