diff --git a/tests/components/ondilo_ico/snapshots/test_init.ambr b/tests/components/ondilo_ico/snapshots/test_init.ambr
new file mode 100644
index 00000000000..c488b1e3c15
--- /dev/null
+++ b/tests/components/ondilo_ico/snapshots/test_init.ambr
@@ -0,0 +1,61 @@
+# serializer version: 1
+# name: test_devices[ondilo_ico-W1122333044455]
+  DeviceRegistryEntrySnapshot({
+    'area_id': None,
+    'config_entries': <ANY>,
+    'configuration_url': None,
+    'connections': set({
+    }),
+    'disabled_by': None,
+    'entry_type': None,
+    'hw_version': None,
+    'id': <ANY>,
+    'identifiers': set({
+      tuple(
+        'ondilo_ico',
+        'W1122333044455',
+      ),
+    }),
+    'is_new': False,
+    'labels': set({
+    }),
+    'manufacturer': 'Ondilo',
+    'model': 'ICO',
+    'name': 'Pool 1',
+    'name_by_user': None,
+    'serial_number': None,
+    'suggested_area': None,
+    'sw_version': '1.7.1-stable',
+    'via_device_id': None,
+  })
+# ---
+# name: test_devices[ondilo_ico-W2233304445566]
+  DeviceRegistryEntrySnapshot({
+    'area_id': None,
+    'config_entries': <ANY>,
+    'configuration_url': None,
+    'connections': set({
+    }),
+    'disabled_by': None,
+    'entry_type': None,
+    'hw_version': None,
+    'id': <ANY>,
+    'identifiers': set({
+      tuple(
+        'ondilo_ico',
+        'W2233304445566',
+      ),
+    }),
+    'is_new': False,
+    'labels': set({
+    }),
+    'manufacturer': 'Ondilo',
+    'model': 'ICO',
+    'name': 'Pool 2',
+    'name_by_user': None,
+    'serial_number': None,
+    'suggested_area': None,
+    'sw_version': '1.7.1-stable',
+    'via_device_id': None,
+  })
+# ---
diff --git a/tests/components/ondilo_ico/test_init.py b/tests/components/ondilo_ico/test_init.py
index 28897f97fa1..707022e9145 100644
--- a/tests/components/ondilo_ico/test_init.py
+++ b/tests/components/ondilo_ico/test_init.py
@@ -3,14 +3,38 @@
 from typing import Any
 from unittest.mock import MagicMock
 
+from syrupy import SnapshotAssertion
+
 from homeassistant.config_entries import ConfigEntryState
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
 
 from . import setup_integration
 
 from tests.common import MockConfigEntry
 
 
+async def test_devices(
+    hass: HomeAssistant,
+    mock_ondilo_client: MagicMock,
+    device_registry: dr.DeviceRegistry,
+    config_entry: MockConfigEntry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test devices are registered."""
+    await setup_integration(hass, config_entry, mock_ondilo_client)
+
+    device_entries = dr.async_entries_for_config_entry(
+        device_registry, config_entry.entry_id
+    )
+
+    assert len(device_entries) == 2
+
+    for device_entry in device_entries:
+        identifier = list(device_entry.identifiers)[0]
+        assert device_entry == snapshot(name=f"{identifier[0]}-{identifier[1]}")
+
+
 async def test_init_with_no_ico_attached(
     hass: HomeAssistant,
     mock_ondilo_client: MagicMock,