diff --git a/.coveragerc b/.coveragerc
index d160efb776c..6cf3f66d8af 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -407,6 +407,7 @@ omit =
     homeassistant/components/garages_amsterdam/binary_sensor.py
     homeassistant/components/garages_amsterdam/sensor.py
     homeassistant/components/gardena_bluetooth/__init__.py
+    homeassistant/components/gardena_bluetooth/binary_sensor.py
     homeassistant/components/gardena_bluetooth/const.py
     homeassistant/components/gardena_bluetooth/coordinator.py
     homeassistant/components/gardena_bluetooth/number.py
diff --git a/homeassistant/components/gardena_bluetooth/__init__.py b/homeassistant/components/gardena_bluetooth/__init__.py
index 98869019d29..c779d30b0fc 100644
--- a/homeassistant/components/gardena_bluetooth/__init__.py
+++ b/homeassistant/components/gardena_bluetooth/__init__.py
@@ -20,7 +20,12 @@ import homeassistant.util.dt as dt_util
 from .const import DOMAIN
 from .coordinator import Coordinator, DeviceUnavailable
 
-PLATFORMS: list[Platform] = [Platform.NUMBER, Platform.SENSOR, Platform.SWITCH]
+PLATFORMS: list[Platform] = [
+    Platform.BINARY_SENSOR,
+    Platform.NUMBER,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 LOGGER = logging.getLogger(__name__)
 TIMEOUT = 20.0
 DISCONNECT_DELAY = 5
diff --git a/homeassistant/components/gardena_bluetooth/binary_sensor.py b/homeassistant/components/gardena_bluetooth/binary_sensor.py
new file mode 100644
index 00000000000..0285f7bdf82
--- /dev/null
+++ b/homeassistant/components/gardena_bluetooth/binary_sensor.py
@@ -0,0 +1,64 @@
+"""Support for binary_sensor entities."""
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+
+from gardena_bluetooth.const import Valve
+from gardena_bluetooth.parse import CharacteristicBool
+
+from homeassistant.components.binary_sensor import (
+    BinarySensorDeviceClass,
+    BinarySensorEntity,
+    BinarySensorEntityDescription,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import EntityCategory
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .const import DOMAIN
+from .coordinator import Coordinator, GardenaBluetoothDescriptorEntity
+
+
+@dataclass
+class GardenaBluetoothBinarySensorEntityDescription(BinarySensorEntityDescription):
+    """Description of entity."""
+
+    char: CharacteristicBool = field(default_factory=lambda: CharacteristicBool(""))
+
+
+DESCRIPTIONS = (
+    GardenaBluetoothBinarySensorEntityDescription(
+        key=Valve.connected_state.uuid,
+        translation_key="valve_connected_state",
+        device_class=BinarySensorDeviceClass.CONNECTIVITY,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        char=Valve.connected_state,
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
+) -> None:
+    """Set up binary sensor based on a config entry."""
+    coordinator: Coordinator = hass.data[DOMAIN][entry.entry_id]
+    entities = [
+        GardenaBluetoothBinarySensor(coordinator, description)
+        for description in DESCRIPTIONS
+        if description.key in coordinator.characteristics
+    ]
+    async_add_entities(entities)
+
+
+class GardenaBluetoothBinarySensor(
+    GardenaBluetoothDescriptorEntity, BinarySensorEntity
+):
+    """Representation of a binary sensor."""
+
+    entity_description: GardenaBluetoothBinarySensorEntityDescription
+
+    def _handle_coordinator_update(self) -> None:
+        char = self.entity_description.char
+        self._attr_is_on = self.coordinator.get_cached(char)
+        super()._handle_coordinator_update()
diff --git a/homeassistant/components/gardena_bluetooth/strings.json b/homeassistant/components/gardena_bluetooth/strings.json
index 3548412e04f..5a3f77eafa4 100644
--- a/homeassistant/components/gardena_bluetooth/strings.json
+++ b/homeassistant/components/gardena_bluetooth/strings.json
@@ -19,6 +19,11 @@
     }
   },
   "entity": {
+    "binary_sensor": {
+      "valve_connected_state": {
+        "name": "Valve connection"
+      }
+    },
     "number": {
       "remaining_open_time": {
         "name": "Remaining open time"
diff --git a/tests/components/gardena_bluetooth/snapshots/test_binary_sensor.ambr b/tests/components/gardena_bluetooth/snapshots/test_binary_sensor.ambr
new file mode 100644
index 00000000000..8a2600dcbb1
--- /dev/null
+++ b/tests/components/gardena_bluetooth/snapshots/test_binary_sensor.ambr
@@ -0,0 +1,27 @@
+# serializer version: 1
+# name: test_setup[98bd0f12-0b0e-421a-84e5-ddbf75dc6de4-raw0-binary_sensor.mock_title_valve_connection]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'connectivity',
+      'friendly_name': 'Mock Title Valve connection',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.mock_title_valve_connection',
+    'last_changed': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
+# name: test_setup[98bd0f12-0b0e-421a-84e5-ddbf75dc6de4-raw0-binary_sensor.mock_title_valve_connection].1
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'connectivity',
+      'friendly_name': 'Mock Title Valve connection',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.mock_title_valve_connection',
+    'last_changed': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
diff --git a/tests/components/gardena_bluetooth/test_binary_sensor.py b/tests/components/gardena_bluetooth/test_binary_sensor.py
new file mode 100644
index 00000000000..cda24f871e8
--- /dev/null
+++ b/tests/components/gardena_bluetooth/test_binary_sensor.py
@@ -0,0 +1,44 @@
+"""Test Gardena Bluetooth binary sensor."""
+
+
+from gardena_bluetooth.const import Valve
+import pytest
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+
+from . import setup_entry
+
+from tests.common import MockConfigEntry
+
+
+@pytest.mark.parametrize(
+    ("uuid", "raw", "entity_id"),
+    [
+        (
+            Valve.connected_state.uuid,
+            [b"\x01", b"\x00"],
+            "binary_sensor.mock_title_valve_connection",
+        ),
+    ],
+)
+async def test_setup(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    mock_entry: MockConfigEntry,
+    mock_read_char_raw: dict[str, bytes],
+    uuid: str,
+    raw: list[bytes],
+    entity_id: str,
+) -> None:
+    """Test setup creates expected entities."""
+
+    mock_read_char_raw[uuid] = raw[0]
+    coordinator = await setup_entry(hass, mock_entry, [Platform.BINARY_SENSOR])
+    assert hass.states.get(entity_id) == snapshot
+
+    for char_raw in raw[1:]:
+        mock_read_char_raw[uuid] = char_raw
+        await coordinator.async_refresh()
+        assert hass.states.get(entity_id) == snapshot