diff --git a/.coveragerc b/.coveragerc
index c4ca75e5681..3dc57050bdf 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -886,6 +886,8 @@ omit =
     homeassistant/components/zamg/weather.py
     homeassistant/components/zengge/light.py
     homeassistant/components/zeroconf/*
+    homeassistant/components/zerproc/__init__.py
+    homeassistant/components/zerproc/const.py
     homeassistant/components/zestimate/sensor.py
     homeassistant/components/zha/api.py
     homeassistant/components/zha/core/channels/*
diff --git a/CODEOWNERS b/CODEOWNERS
index 3355571408a..31a478d6fdb 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -468,6 +468,7 @@ homeassistant/components/yessssms/* @flowolf
 homeassistant/components/yi/* @bachya
 homeassistant/components/yr/* @danielhiversen
 homeassistant/components/zeroconf/* @robbiet480 @Kane610
+homeassistant/components/zerproc/* @emlove
 homeassistant/components/zha/* @dmulcahey @adminiuga
 homeassistant/components/zone/* @home-assistant/core
 homeassistant/components/zoneminder/* @rohankapoorcom
diff --git a/homeassistant/components/zerproc/__init__.py b/homeassistant/components/zerproc/__init__.py
new file mode 100644
index 00000000000..2c652f61c21
--- /dev/null
+++ b/homeassistant/components/zerproc/__init__.py
@@ -0,0 +1,40 @@
+"""Zerproc lights integration."""
+import asyncio
+
+from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN
+
+PLATFORMS = ["light"]
+
+
+async def async_setup(hass, config):
+    """Set up the Zerproc platform."""
+    hass.async_create_task(
+        hass.config_entries.flow.async_init(DOMAIN, context={"source": SOURCE_IMPORT})
+    )
+
+    return True
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
+    """Set up Zerproc from a config entry."""
+    for component in PLATFORMS:
+        hass.async_create_task(
+            hass.config_entries.async_forward_entry_setup(entry, component)
+        )
+
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+    """Unload a config entry."""
+    return all(
+        await asyncio.gather(
+            *[
+                hass.config_entries.async_forward_entry_unload(entry, component)
+                for component in PLATFORMS
+            ]
+        )
+    )
diff --git a/homeassistant/components/zerproc/config_flow.py b/homeassistant/components/zerproc/config_flow.py
new file mode 100644
index 00000000000..28597b3859e
--- /dev/null
+++ b/homeassistant/components/zerproc/config_flow.py
@@ -0,0 +1,26 @@
+"""Config flow for Zerproc."""
+import logging
+
+import pyzerproc
+
+from homeassistant import config_entries
+from homeassistant.helpers import config_entry_flow
+
+from .const import DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def _async_has_devices(hass) -> bool:
+    """Return if there are devices that can be discovered."""
+    try:
+        devices = await hass.async_add_executor_job(pyzerproc.discover)
+        return len(devices) > 0
+    except pyzerproc.ZerprocException:
+        _LOGGER.error("Unable to discover nearby Zerproc devices", exc_info=True)
+        return False
+
+
+config_entry_flow.register_discovery_flow(
+    DOMAIN, "Zerproc", _async_has_devices, config_entries.CONN_CLASS_LOCAL_POLL
+)
diff --git a/homeassistant/components/zerproc/const.py b/homeassistant/components/zerproc/const.py
new file mode 100644
index 00000000000..a5481bd4c34
--- /dev/null
+++ b/homeassistant/components/zerproc/const.py
@@ -0,0 +1,2 @@
+"""Constants for the Zerproc integration."""
+DOMAIN = "zerproc"
diff --git a/homeassistant/components/zerproc/light.py b/homeassistant/components/zerproc/light.py
new file mode 100644
index 00000000000..0a7141efe8a
--- /dev/null
+++ b/homeassistant/components/zerproc/light.py
@@ -0,0 +1,203 @@
+"""Zerproc light platform."""
+from datetime import timedelta
+import logging
+from typing import Callable, List
+
+import pyzerproc
+
+from homeassistant.components.light import (
+    ATTR_BRIGHTNESS,
+    ATTR_HS_COLOR,
+    SUPPORT_BRIGHTNESS,
+    SUPPORT_COLOR,
+    Light,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import EVENT_HOMEASSISTANT_STOP
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.event import async_track_time_interval
+from homeassistant.helpers.typing import HomeAssistantType
+import homeassistant.util.color as color_util
+
+from .const import DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+SUPPORT_ZERPROC = SUPPORT_BRIGHTNESS | SUPPORT_COLOR
+
+DISCOVERY_INTERVAL = timedelta(seconds=60)
+
+PARALLEL_UPDATES = 0
+
+
+def connect_lights(lights: List[pyzerproc.Light]) -> List[pyzerproc.Light]:
+    """Attempt to connect to lights, and return the connected lights."""
+    connected = []
+    for light in lights:
+        try:
+            light.connect(auto_reconnect=True)
+            connected.append(light)
+        except pyzerproc.ZerprocException:
+            _LOGGER.debug("Unable to connect to '%s'", light.address, exc_info=True)
+
+    return connected
+
+
+def discover_entities(hass: HomeAssistant) -> List[Entity]:
+    """Attempt to discover new lights."""
+    lights = pyzerproc.discover()
+
+    # Filter out already discovered lights
+    new_lights = [
+        light for light in lights if light.address not in hass.data[DOMAIN]["addresses"]
+    ]
+
+    entities = []
+    for light in connect_lights(new_lights):
+        # Double-check the light hasn't been added in another thread
+        if light.address not in hass.data[DOMAIN]["addresses"]:
+            hass.data[DOMAIN]["addresses"].add(light.address)
+            entities.append(ZerprocLight(light))
+
+    return entities
+
+
+async def async_setup_entry(
+    hass: HomeAssistantType,
+    config_entry: ConfigEntry,
+    async_add_entities: Callable[[List[Entity], bool], None],
+) -> None:
+    """Set up Abode light devices."""
+    if DOMAIN not in hass.data:
+        hass.data[DOMAIN] = {}
+    if "addresses" not in hass.data[DOMAIN]:
+        hass.data[DOMAIN]["addresses"] = set()
+
+    warned = False
+
+    async def discover(*args):
+        """Wrap discovery to include params."""
+        nonlocal warned
+        try:
+            entities = await hass.async_add_executor_job(discover_entities, hass)
+            async_add_entities(entities, update_before_add=True)
+            warned = False
+        except pyzerproc.ZerprocException:
+            if warned is False:
+                _LOGGER.warning("Error discovering Zerproc lights", exc_info=True)
+                warned = True
+
+    # Initial discovery
+    hass.async_create_task(discover())
+
+    # Perform recurring discovery of new devices
+    async_track_time_interval(hass, discover, DISCOVERY_INTERVAL)
+
+
+class ZerprocLight(Light):
+    """Representation of an Zerproc Light."""
+
+    def __init__(self, light):
+        """Initialize a Zerproc light."""
+        self._light = light
+        self._name = None
+        self._is_on = None
+        self._hs_color = None
+        self._brightness = None
+        self._available = True
+
+    async def async_added_to_hass(self) -> None:
+        """Run when entity about to be added to hass."""
+        self.async_on_remove(
+            self.hass.bus.async_listen_once(
+                EVENT_HOMEASSISTANT_STOP, self.on_hass_shutdown
+            )
+        )
+
+    async def async_will_remove_from_hass(self) -> None:
+        """Run when entity will be removed from hass."""
+        await self.hass.async_add_executor_job(self._light.disconnect)
+
+    def on_hass_shutdown(self, event):
+        """Execute when Home Assistant is shutting down."""
+        self._light.disconnect()
+
+    @property
+    def name(self):
+        """Return the display name of this light."""
+        return self._light.name
+
+    @property
+    def unique_id(self):
+        """Return the ID of this light."""
+        return self._light.address
+
+    @property
+    def device_info(self):
+        """Device info for this light."""
+        return {
+            "identifiers": {(DOMAIN, self.unique_id)},
+            "name": self.name,
+            "manufacturer": "Zerproc",
+        }
+
+    @property
+    def supported_features(self):
+        """Flag supported features."""
+        return SUPPORT_ZERPROC
+
+    @property
+    def brightness(self):
+        """Return the brightness of the light."""
+        return self._brightness
+
+    @property
+    def hs_color(self):
+        """Return the hs color."""
+        return self._hs_color
+
+    @property
+    def is_on(self):
+        """Return true if light is on."""
+        return self._is_on
+
+    @property
+    def available(self) -> bool:
+        """Return True if entity is available."""
+        return self._available
+
+    def turn_on(self, **kwargs):
+        """Instruct the light to turn on."""
+        if ATTR_BRIGHTNESS in kwargs or ATTR_HS_COLOR in kwargs:
+            default_hs = (0, 0) if self._hs_color is None else self._hs_color
+            hue_sat = kwargs.get(ATTR_HS_COLOR, default_hs)
+
+            default_brightness = 255 if self._brightness is None else self._brightness
+            brightness = kwargs.get(ATTR_BRIGHTNESS, default_brightness)
+
+            rgb = color_util.color_hsv_to_RGB(*hue_sat, brightness / 255 * 100)
+            self._light.set_color(*rgb)
+        else:
+            self._light.turn_on()
+
+    def turn_off(self, **kwargs):
+        """Instruct the light to turn off."""
+        self._light.turn_off()
+
+    def update(self):
+        """Fetch new state data for this light."""
+        try:
+            state = self._light.get_state()
+        except pyzerproc.ZerprocException:
+            if self._available:
+                _LOGGER.warning("Unable to connect to %s", self.entity_id)
+            self._available = False
+            return
+        if self._available is False:
+            _LOGGER.info("Reconnected to %s", self.entity_id)
+            self._available = True
+        self._is_on = state.is_on
+        hsv = color_util.color_RGB_to_hsv(*state.color)
+        self._hs_color = hsv[:2]
+        self._brightness = int(round((hsv[2] / 100) * 255))
diff --git a/homeassistant/components/zerproc/manifest.json b/homeassistant/components/zerproc/manifest.json
new file mode 100644
index 00000000000..f00a8bdc885
--- /dev/null
+++ b/homeassistant/components/zerproc/manifest.json
@@ -0,0 +1,12 @@
+{
+  "domain": "zerproc",
+  "name": "Zerproc",
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/zerproc",
+  "requirements": [
+    "pyzerproc==0.2.4"
+  ],
+  "codeowners": [
+    "@emlove"
+  ]
+}
diff --git a/homeassistant/components/zerproc/strings.json b/homeassistant/components/zerproc/strings.json
new file mode 100644
index 00000000000..9662bdc36d8
--- /dev/null
+++ b/homeassistant/components/zerproc/strings.json
@@ -0,0 +1,14 @@
+{
+  "title": "Zerproc",
+  "config": {
+    "step": {
+      "confirm": {
+        "description": "[%key:common::config_flow::description::confirm_setup%]"
+      }
+    },
+    "abort": {
+      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]",
+      "no_devices_found": "[%key:common::config_flow::abort::no_devices_found%]"
+    }
+  }
+}
diff --git a/homeassistant/components/zerproc/translations/en.json b/homeassistant/components/zerproc/translations/en.json
new file mode 100644
index 00000000000..f0567560376
--- /dev/null
+++ b/homeassistant/components/zerproc/translations/en.json
@@ -0,0 +1,14 @@
+{
+    "config": {
+        "abort": {
+            "no_devices_found": "No Zerproc lights found nearby.",
+            "single_instance_allowed": "Only a single configuration of Zerproc lights is necessary."
+        },
+        "step": {
+            "confirm": {
+                "description": "Do you want to set up Zerproc lights?"
+            }
+        }
+    },
+    "title": "Zerproc"
+}
\ No newline at end of file
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index c35c0384c4b..67573957ee6 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -158,6 +158,7 @@ FLOWS = [
     "wled",
     "wwlln",
     "xiaomi_miio",
+    "zerproc",
     "zha",
     "zwave",
     "zwave_mqtt"
diff --git a/requirements_all.txt b/requirements_all.txt
index 0ca8f0bc60e..24aebd7a042 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1813,6 +1813,9 @@ pyzabbix==0.7.4
 # homeassistant.components.qrcode
 pyzbar==0.1.7
 
+# homeassistant.components.zerproc
+pyzerproc==0.2.4
+
 # homeassistant.components.qnap
 qnapstats==0.3.0
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 9ae55eacd86..9e3d407a275 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -737,6 +737,9 @@ pyvizio==0.1.47
 # homeassistant.components.html5
 pywebpush==1.9.2
 
+# homeassistant.components.zerproc
+pyzerproc==0.2.4
+
 # homeassistant.components.rachio
 rachiopy==0.1.3
 
diff --git a/tests/components/zerproc/__init__.py b/tests/components/zerproc/__init__.py
new file mode 100644
index 00000000000..bd37baed313
--- /dev/null
+++ b/tests/components/zerproc/__init__.py
@@ -0,0 +1 @@
+"""Tests for the zerproc integration."""
diff --git a/tests/components/zerproc/test_config_flow.py b/tests/components/zerproc/test_config_flow.py
new file mode 100644
index 00000000000..8dbead08adb
--- /dev/null
+++ b/tests/components/zerproc/test_config_flow.py
@@ -0,0 +1,86 @@
+"""Test the zerproc config flow."""
+from asynctest import patch
+import pyzerproc
+
+from homeassistant import config_entries, setup
+from homeassistant.components.zerproc.config_flow import DOMAIN
+
+
+async def test_flow_success(hass):
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == "form"
+    assert result["errors"] is None
+
+    with patch(
+        "homeassistant.components.zerproc.config_flow.pyzerproc.discover",
+        return_value=["Light1", "Light2"],
+    ), patch(
+        "homeassistant.components.zerproc.async_setup", return_value=True
+    ) as mock_setup, patch(
+        "homeassistant.components.zerproc.async_setup_entry", return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(result["flow_id"], {},)
+
+    assert result2["type"] == "create_entry"
+    assert result2["title"] == "Zerproc"
+    assert result2["data"] == {}
+
+    await hass.async_block_till_done()
+    assert len(mock_setup.mock_calls) == 1
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_flow_no_devices_found(hass):
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == "form"
+    assert result["errors"] is None
+
+    with patch(
+        "homeassistant.components.zerproc.config_flow.pyzerproc.discover",
+        return_value=[],
+    ), patch(
+        "homeassistant.components.zerproc.async_setup", return_value=True
+    ) as mock_setup, patch(
+        "homeassistant.components.zerproc.async_setup_entry", return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(result["flow_id"], {},)
+
+    assert result2["type"] == "abort"
+    assert result2["reason"] == "no_devices_found"
+    await hass.async_block_till_done()
+    assert len(mock_setup.mock_calls) == 0
+    assert len(mock_setup_entry.mock_calls) == 0
+
+
+async def test_flow_exceptions_caught(hass):
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == "form"
+    assert result["errors"] is None
+
+    with patch(
+        "homeassistant.components.zerproc.config_flow.pyzerproc.discover",
+        side_effect=pyzerproc.ZerprocException("TEST"),
+    ), patch(
+        "homeassistant.components.zerproc.async_setup", return_value=True
+    ) as mock_setup, patch(
+        "homeassistant.components.zerproc.async_setup_entry", return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(result["flow_id"], {},)
+
+    assert result2["type"] == "abort"
+    assert result2["reason"] == "no_devices_found"
+    await hass.async_block_till_done()
+    assert len(mock_setup.mock_calls) == 0
+    assert len(mock_setup_entry.mock_calls) == 0
diff --git a/tests/components/zerproc/test_light.py b/tests/components/zerproc/test_light.py
new file mode 100644
index 00000000000..8f3716a34ea
--- /dev/null
+++ b/tests/components/zerproc/test_light.py
@@ -0,0 +1,316 @@
+"""Test the zerproc lights."""
+from asynctest import patch
+import pytest
+import pyzerproc
+
+from homeassistant import setup
+from homeassistant.components.light import (
+    ATTR_BRIGHTNESS,
+    ATTR_HS_COLOR,
+    ATTR_RGB_COLOR,
+    ATTR_XY_COLOR,
+    SCAN_INTERVAL,
+    SUPPORT_BRIGHTNESS,
+    SUPPORT_COLOR,
+)
+from homeassistant.components.zerproc.light import DOMAIN
+from homeassistant.const import (
+    ATTR_ENTITY_ID,
+    ATTR_FRIENDLY_NAME,
+    ATTR_SUPPORTED_FEATURES,
+    STATE_OFF,
+    STATE_ON,
+    STATE_UNAVAILABLE,
+)
+import homeassistant.util.dt as dt_util
+
+from tests.common import MockConfigEntry, async_fire_time_changed
+
+
+@pytest.fixture
+async def mock_light(hass):
+    """Create a mock light entity."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+
+    mock_entry = MockConfigEntry(domain=DOMAIN)
+    mock_entry.add_to_hass(hass)
+
+    light = pyzerproc.Light("AA:BB:CC:DD:EE:FF", "LEDBlue-CCDDEEFF")
+
+    mock_state = pyzerproc.LightState(False, (0, 0, 0))
+
+    with patch(
+        "homeassistant.components.zerproc.light.pyzerproc.discover",
+        return_value=[light],
+    ), patch.object(light, "connect"), patch.object(
+        light, "get_state", return_value=mock_state
+    ):
+        await hass.config_entries.async_setup(mock_entry.entry_id)
+        await hass.async_block_till_done()
+
+    return light
+
+
+async def test_init(hass):
+    """Test platform setup."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+
+    mock_entry = MockConfigEntry(domain=DOMAIN)
+    mock_entry.add_to_hass(hass)
+
+    mock_light_1 = pyzerproc.Light("AA:BB:CC:DD:EE:FF", "LEDBlue-CCDDEEFF")
+    mock_light_2 = pyzerproc.Light("11:22:33:44:55:66", "LEDBlue-33445566")
+
+    mock_state_1 = pyzerproc.LightState(False, (0, 0, 0))
+    mock_state_2 = pyzerproc.LightState(True, (0, 80, 255))
+
+    with patch(
+        "homeassistant.components.zerproc.light.pyzerproc.discover",
+        return_value=[mock_light_1, mock_light_2],
+    ), patch.object(mock_light_1, "connect"), patch.object(
+        mock_light_2, "connect"
+    ), patch.object(
+        mock_light_1, "get_state", return_value=mock_state_1
+    ), patch.object(
+        mock_light_2, "get_state", return_value=mock_state_2
+    ):
+        await hass.config_entries.async_setup(mock_entry.entry_id)
+        await hass.async_block_till_done()
+
+    state = hass.states.get("light.ledblue_ccddeeff")
+    assert state.state == STATE_OFF
+    assert state.attributes == {
+        ATTR_FRIENDLY_NAME: "LEDBlue-CCDDEEFF",
+        ATTR_SUPPORTED_FEATURES: SUPPORT_BRIGHTNESS | SUPPORT_COLOR,
+    }
+
+    state = hass.states.get("light.ledblue_33445566")
+    assert state.state == STATE_ON
+    assert state.attributes == {
+        ATTR_FRIENDLY_NAME: "LEDBlue-33445566",
+        ATTR_SUPPORTED_FEATURES: SUPPORT_BRIGHTNESS | SUPPORT_COLOR,
+        ATTR_BRIGHTNESS: 255,
+        ATTR_HS_COLOR: (221.176, 100.0),
+        ATTR_RGB_COLOR: (0, 80, 255),
+        ATTR_XY_COLOR: (0.138, 0.08),
+    }
+
+    with patch.object(hass.loop, "stop"), patch.object(
+        mock_light_1, "disconnect"
+    ) as mock_disconnect_1, patch.object(
+        mock_light_2, "disconnect"
+    ) as mock_disconnect_2:
+        await hass.async_stop()
+
+    assert mock_disconnect_1.called
+    assert mock_disconnect_2.called
+
+
+async def test_discovery_exception(hass):
+    """Test platform setup."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+
+    mock_entry = MockConfigEntry(domain=DOMAIN)
+    mock_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.zerproc.light.pyzerproc.discover",
+        side_effect=pyzerproc.ZerprocException("TEST"),
+    ):
+        await hass.config_entries.async_setup(mock_entry.entry_id)
+        await hass.async_block_till_done()
+
+    # The exception should be captured and no entities should be added
+    assert len(hass.data[DOMAIN]["addresses"]) == 0
+
+
+async def test_connect_exception(hass):
+    """Test platform setup."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+
+    mock_entry = MockConfigEntry(domain=DOMAIN)
+    mock_entry.add_to_hass(hass)
+
+    mock_light = pyzerproc.Light("AA:BB:CC:DD:EE:FF", "LEDBlue-CCDDEEFF")
+
+    with patch(
+        "homeassistant.components.zerproc.light.pyzerproc.discover",
+        return_value=[mock_light],
+    ), patch.object(
+        mock_light, "connect", side_effect=pyzerproc.ZerprocException("TEST")
+    ):
+        await hass.config_entries.async_setup(mock_entry.entry_id)
+        await hass.async_block_till_done()
+
+    # The exception should be captured and no entities should be added
+    assert len(hass.data[DOMAIN]["addresses"]) == 0
+
+
+async def test_light_turn_on(hass, mock_light):
+    """Test ZerprocLight turn_on."""
+    utcnow = dt_util.utcnow()
+    with patch.object(mock_light, "turn_on") as mock_turn_on:
+        await hass.services.async_call(
+            "light",
+            "turn_on",
+            {ATTR_ENTITY_ID: "light.ledblue_ccddeeff"},
+            blocking=True,
+        )
+        await hass.async_block_till_done()
+    mock_turn_on.assert_called()
+
+    with patch.object(mock_light, "set_color") as mock_set_color:
+        await hass.services.async_call(
+            "light",
+            "turn_on",
+            {ATTR_ENTITY_ID: "light.ledblue_ccddeeff", ATTR_BRIGHTNESS: 25},
+            blocking=True,
+        )
+        await hass.async_block_till_done()
+    mock_set_color.assert_called_with(25, 25, 25)
+
+    # Make sure no discovery calls are made while we emulate time passing
+    with patch("homeassistant.components.zerproc.light.pyzerproc.discover"):
+        with patch.object(
+            mock_light,
+            "get_state",
+            return_value=pyzerproc.LightState(True, (175, 150, 220)),
+        ):
+            utcnow = utcnow + SCAN_INTERVAL
+            async_fire_time_changed(hass, utcnow)
+            await hass.async_block_till_done()
+
+        with patch.object(mock_light, "set_color") as mock_set_color:
+            await hass.services.async_call(
+                "light",
+                "turn_on",
+                {ATTR_ENTITY_ID: "light.ledblue_ccddeeff", ATTR_BRIGHTNESS: 25},
+                blocking=True,
+            )
+            await hass.async_block_till_done()
+
+        mock_set_color.assert_called_with(19, 17, 25)
+
+        with patch.object(mock_light, "set_color") as mock_set_color:
+            await hass.services.async_call(
+                "light",
+                "turn_on",
+                {ATTR_ENTITY_ID: "light.ledblue_ccddeeff", ATTR_HS_COLOR: (50, 50)},
+                blocking=True,
+            )
+            await hass.async_block_till_done()
+
+        mock_set_color.assert_called_with(220, 201, 110)
+
+        with patch.object(
+            mock_light,
+            "get_state",
+            return_value=pyzerproc.LightState(True, (75, 75, 75)),
+        ):
+            utcnow = utcnow + SCAN_INTERVAL
+            async_fire_time_changed(hass, utcnow)
+            await hass.async_block_till_done()
+
+        with patch.object(mock_light, "set_color") as mock_set_color:
+            await hass.services.async_call(
+                "light",
+                "turn_on",
+                {ATTR_ENTITY_ID: "light.ledblue_ccddeeff", ATTR_HS_COLOR: (50, 50)},
+                blocking=True,
+            )
+            await hass.async_block_till_done()
+
+        mock_set_color.assert_called_with(75, 68, 37)
+
+        with patch.object(mock_light, "set_color") as mock_set_color:
+            await hass.services.async_call(
+                "light",
+                "turn_on",
+                {
+                    ATTR_ENTITY_ID: "light.ledblue_ccddeeff",
+                    ATTR_BRIGHTNESS: 200,
+                    ATTR_HS_COLOR: (75, 75),
+                },
+                blocking=True,
+            )
+            await hass.async_block_till_done()
+
+        mock_set_color.assert_called_with(162, 200, 50)
+
+
+async def test_light_turn_off(hass, mock_light):
+    """Test ZerprocLight turn_on."""
+    with patch.object(mock_light, "turn_off") as mock_turn_off:
+        await hass.services.async_call(
+            "light",
+            "turn_off",
+            {ATTR_ENTITY_ID: "light.ledblue_ccddeeff"},
+            blocking=True,
+        )
+        await hass.async_block_till_done()
+    mock_turn_off.assert_called()
+
+
+async def test_light_update(hass, mock_light):
+    """Test ZerprocLight update."""
+    utcnow = dt_util.utcnow()
+
+    state = hass.states.get("light.ledblue_ccddeeff")
+    assert state.state == STATE_OFF
+    assert state.attributes == {
+        ATTR_FRIENDLY_NAME: "LEDBlue-CCDDEEFF",
+        ATTR_SUPPORTED_FEATURES: SUPPORT_BRIGHTNESS | SUPPORT_COLOR,
+    }
+
+    # Make sure no discovery calls are made while we emulate time passing
+    with patch("homeassistant.components.zerproc.light.pyzerproc.discover"):
+        # Test an exception during discovery
+        with patch.object(
+            mock_light, "get_state", side_effect=pyzerproc.ZerprocException("TEST")
+        ):
+            utcnow = utcnow + SCAN_INTERVAL
+            async_fire_time_changed(hass, utcnow)
+            await hass.async_block_till_done()
+
+        state = hass.states.get("light.ledblue_ccddeeff")
+        assert state.state == STATE_UNAVAILABLE
+        assert state.attributes == {
+            ATTR_FRIENDLY_NAME: "LEDBlue-CCDDEEFF",
+            ATTR_SUPPORTED_FEATURES: SUPPORT_BRIGHTNESS | SUPPORT_COLOR,
+        }
+
+        with patch.object(
+            mock_light,
+            "get_state",
+            return_value=pyzerproc.LightState(False, (200, 128, 100)),
+        ):
+            utcnow = utcnow + SCAN_INTERVAL
+            async_fire_time_changed(hass, utcnow)
+            await hass.async_block_till_done()
+
+        state = hass.states.get("light.ledblue_ccddeeff")
+        assert state.state == STATE_OFF
+        assert state.attributes == {
+            ATTR_FRIENDLY_NAME: "LEDBlue-CCDDEEFF",
+            ATTR_SUPPORTED_FEATURES: SUPPORT_BRIGHTNESS | SUPPORT_COLOR,
+        }
+
+        with patch.object(
+            mock_light,
+            "get_state",
+            return_value=pyzerproc.LightState(True, (175, 150, 220)),
+        ):
+            utcnow = utcnow + SCAN_INTERVAL
+            async_fire_time_changed(hass, utcnow)
+            await hass.async_block_till_done()
+
+        state = hass.states.get("light.ledblue_ccddeeff")
+        assert state.state == STATE_ON
+        assert state.attributes == {
+            ATTR_FRIENDLY_NAME: "LEDBlue-CCDDEEFF",
+            ATTR_SUPPORTED_FEATURES: SUPPORT_BRIGHTNESS | SUPPORT_COLOR,
+            ATTR_BRIGHTNESS: 220,
+            ATTR_HS_COLOR: (261.429, 31.818),
+            ATTR_RGB_COLOR: (202, 173, 255),
+            ATTR_XY_COLOR: (0.291, 0.232),
+        }