diff --git a/homeassistant/components/homematicip_cloud/binary_sensor.py b/homeassistant/components/homematicip_cloud/binary_sensor.py
index 9c0e5620022..b020a7e7473 100644
--- a/homeassistant/components/homematicip_cloud/binary_sensor.py
+++ b/homeassistant/components/homematicip_cloud/binary_sensor.py
@@ -5,6 +5,7 @@ from __future__ import annotations
 from typing import Any
 
 from homematicip.base.enums import SmokeDetectorAlarmType, WindowState
+from homematicip.base.functionalChannels import MultiModeInputChannel
 from homematicip.device import (
     AccelerationSensor,
     ContactInterface,
@@ -87,8 +88,11 @@ async def async_setup_entry(
             entities.append(HomematicipTiltVibrationSensor(hap, device))
         if isinstance(device, WiredInput32):
             entities.extend(
-                HomematicipMultiContactInterface(hap, device, channel=channel)
-                for channel in range(1, 33)
+                HomematicipMultiContactInterface(
+                    hap, device, channel_real_index=channel.index
+                )
+                for channel in device.functionalChannels
+                if isinstance(channel, MultiModeInputChannel)
             )
         elif isinstance(device, FullFlushContactInterface6):
             entities.extend(
@@ -227,21 +231,24 @@ class HomematicipMultiContactInterface(HomematicipGenericEntity, BinarySensorEnt
         device,
         channel=1,
         is_multi_channel=True,
+        channel_real_index=None,
     ) -> None:
         """Initialize the multi contact entity."""
         super().__init__(
-            hap, device, channel=channel, is_multi_channel=is_multi_channel
+            hap,
+            device,
+            channel=channel,
+            is_multi_channel=is_multi_channel,
+            channel_real_index=channel_real_index,
         )
 
     @property
     def is_on(self) -> bool | None:
         """Return true if the contact interface is on/open."""
-        if self._device.functionalChannels[self._channel].windowState is None:
+        channel = self.get_channel_or_raise()
+        if channel.windowState is None:
             return None
-        return (
-            self._device.functionalChannels[self._channel].windowState
-            != WindowState.CLOSED
-        )
+        return channel.windowState != WindowState.CLOSED
 
 
 class HomematicipContactInterface(HomematicipMultiContactInterface, BinarySensorEntity):
diff --git a/homeassistant/components/homematicip_cloud/cover.py b/homeassistant/components/homematicip_cloud/cover.py
index e846a360d39..8a3abb5156c 100644
--- a/homeassistant/components/homematicip_cloud/cover.py
+++ b/homeassistant/components/homematicip_cloud/cover.py
@@ -283,19 +283,23 @@ class HomematicipGarageDoorModule(HomematicipGenericEntity, CoverEntity):
     @property
     def is_closed(self) -> bool | None:
         """Return if the cover is closed."""
-        return self.functional_channel.doorState == DoorState.CLOSED
+        channel = self.get_channel_or_raise()
+        return channel.doorState == DoorState.CLOSED
 
     async def async_open_cover(self, **kwargs: Any) -> None:
         """Open the cover."""
-        await self.functional_channel.async_send_door_command(DoorCommand.OPEN)
+        channel = self.get_channel_or_raise()
+        await channel.async_send_door_command(DoorCommand.OPEN)
 
     async def async_close_cover(self, **kwargs: Any) -> None:
         """Close the cover."""
-        await self.functional_channel.async_send_door_command(DoorCommand.CLOSE)
+        channel = self.get_channel_or_raise()
+        await channel.async_send_door_command(DoorCommand.CLOSE)
 
     async def async_stop_cover(self, **kwargs: Any) -> None:
         """Stop the cover."""
-        await self.functional_channel.async_send_door_command(DoorCommand.STOP)
+        channel = self.get_channel_or_raise()
+        await channel.async_send_door_command(DoorCommand.STOP)
 
 
 class HomematicipCoverShutterGroup(HomematicipGenericEntity, CoverEntity):
diff --git a/homeassistant/components/homematicip_cloud/entity.py b/homeassistant/components/homematicip_cloud/entity.py
index 41ccbb4b060..81f2c7e8c7e 100644
--- a/homeassistant/components/homematicip_cloud/entity.py
+++ b/homeassistant/components/homematicip_cloud/entity.py
@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import contextlib
 import logging
 from typing import Any
 
@@ -84,6 +85,7 @@ class HomematicipGenericEntity(Entity):
         post: str | None = None,
         channel: int | None = None,
         is_multi_channel: bool | None = False,
+        channel_real_index: int | None = None,
     ) -> None:
         """Initialize the generic entity."""
         self._hap = hap
@@ -91,8 +93,19 @@ class HomematicipGenericEntity(Entity):
         self._device = device
         self._post = post
         self._channel = channel
+
+        # channel_real_index represents the actual index of the devices channel.
+        # Accessing a functionalChannel by the channel parameter or array index is unreliable,
+        # because the functionalChannels array is sorted as strings, not numbers.
+        # For example, channels are ordered as: 1, 10, 11, 12, 2, 3, ...
+        # Using channel_real_index ensures you reference the correct channel.
+        self._channel_real_index: int | None = channel_real_index
+
         self._is_multi_channel = is_multi_channel
-        self.functional_channel = self.get_current_channel()
+        self.functional_channel = None
+        with contextlib.suppress(ValueError):
+            self.functional_channel = self.get_current_channel()
+
         # Marker showing that the HmIP device hase been removed.
         self.hmip_device_removed = False
 
@@ -101,17 +114,20 @@ class HomematicipGenericEntity(Entity):
         """Return device specific attributes."""
         # Only physical devices should be HA devices.
         if isinstance(self._device, Device):
+            device_id = str(self._device.id)
+            home_id = str(self._device.homeId)
+
             return DeviceInfo(
                 identifiers={
                     # Serial numbers of Homematic IP device
-                    (DOMAIN, self._device.id)
+                    (DOMAIN, device_id)
                 },
                 manufacturer=self._device.oem,
                 model=self._device.modelType,
                 name=self._device.label,
                 sw_version=self._device.firmwareVersion,
                 # Link to the homematic ip access point.
-                via_device=(DOMAIN, self._device.homeId),
+                via_device=(DOMAIN, home_id),
             )
         return None
 
@@ -185,25 +201,31 @@ class HomematicipGenericEntity(Entity):
     def name(self) -> str:
         """Return the name of the generic entity."""
 
-        name = None
+        name = ""
         # Try to get a label from a channel.
-        if hasattr(self._device, "functionalChannels"):
+        functional_channels = getattr(self._device, "functionalChannels", None)
+        if functional_channels and self.functional_channel:
             if self._is_multi_channel:
-                name = self._device.functionalChannels[self._channel].label
-            elif len(self._device.functionalChannels) > 1:
-                name = self._device.functionalChannels[1].label
+                label = getattr(self.functional_channel, "label", None)
+                if label:
+                    name = str(label)
+            elif len(functional_channels) > 1:
+                label = getattr(functional_channels[1], "label", None)
+                if label:
+                    name = str(label)
 
         # Use device label, if name is not defined by channel label.
         if not name:
-            name = self._device.label
+            name = self._device.label or ""
             if self._post:
                 name = f"{name} {self._post}"
             elif self._is_multi_channel:
-                name = f"{name} Channel{self._channel}"
+                name = f"{name} Channel{self.get_channel_index()}"
 
         # Add a prefix to the name if the homematic ip home has a name.
-        if name and self._home.name:
-            name = f"{self._home.name} {name}"
+        home_name = getattr(self._home, "name", None)
+        if name and home_name:
+            name = f"{home_name} {name}"
 
         return name
 
@@ -217,9 +239,7 @@ class HomematicipGenericEntity(Entity):
         """Return a unique ID."""
         unique_id = f"{self.__class__.__name__}_{self._device.id}"
         if self._is_multi_channel:
-            unique_id = (
-                f"{self.__class__.__name__}_Channel{self._channel}_{self._device.id}"
-            )
+            unique_id = f"{self.__class__.__name__}_Channel{self.get_channel_index()}_{self._device.id}"
 
         return unique_id
 
@@ -254,12 +274,65 @@ class HomematicipGenericEntity(Entity):
         return state_attr
 
     def get_current_channel(self) -> FunctionalChannel:
-        """Return the FunctionalChannel for device."""
-        if hasattr(self._device, "functionalChannels"):
-            if self._is_multi_channel:
-                return self._device.functionalChannels[self._channel]
+        """Return the FunctionalChannel for the device.
 
-            if len(self._device.functionalChannels) > 1:
-                return self._device.functionalChannels[1]
+        Resolution priority:
+        1. For multi-channel entities with a real index, find channel by index match.
+        2. For multi-channel entities without a real index, use the provided channel position.
+        3. For non multi-channel entities with >1 channels, use channel at position 1
+           (index 0 is often a meta/service channel in HmIP).
+        Raises ValueError if no suitable channel can be resolved.
+        """
+        functional_channels = getattr(self._device, "functionalChannels", None)
+        if not functional_channels:
+            raise ValueError(
+                f"Device {getattr(self._device, 'id', 'unknown')} has no functionalChannels"
+            )
 
-        return None
+        # Multi-channel handling
+        if self._is_multi_channel:
+            # Prefer real index mapping when provided to avoid ordering issues.
+            if self._channel_real_index is not None:
+                for channel in functional_channels:
+                    if channel.index == self._channel_real_index:
+                        return channel
+                raise ValueError(
+                    f"Real channel index {self._channel_real_index} not found for device "
+                    f"{getattr(self._device, 'id', 'unknown')}"
+                )
+            # Fallback: positional channel (already sorted as strings upstream).
+            if self._channel is not None and 0 <= self._channel < len(
+                functional_channels
+            ):
+                return functional_channels[self._channel]
+            raise ValueError(
+                f"Channel position {self._channel} invalid for device "
+                f"{getattr(self._device, 'id', 'unknown')} (len={len(functional_channels)})"
+            )
+
+        # Single-channel / non multi-channel entity: choose second element if available
+        if len(functional_channels) > 1:
+            return functional_channels[1]
+        return functional_channels[0]
+
+    def get_channel_index(self) -> int:
+        """Return the correct channel index for this entity.
+
+        Prefers channel_real_index if set, otherwise returns channel.
+        This ensures the correct channel is used even if the functionalChannels list is not numerically ordered.
+        """
+        if self._channel_real_index is not None:
+            return self._channel_real_index
+
+        if self._channel is not None:
+            return self._channel
+
+        return 1
+
+    def get_channel_or_raise(self) -> FunctionalChannel:
+        """Return the FunctionalChannel or raise an error if not found."""
+        if not self.functional_channel:
+            raise ValueError(
+                f"No functional channel found for device {getattr(self._device, 'id', 'unknown')}"
+            )
+        return self.functional_channel
diff --git a/homeassistant/components/homematicip_cloud/event.py b/homeassistant/components/homematicip_cloud/event.py
index 101c3e3015a..f98b078ab73 100644
--- a/homeassistant/components/homematicip_cloud/event.py
+++ b/homeassistant/components/homematicip_cloud/event.py
@@ -92,7 +92,9 @@ class HomematicipDoorBellEvent(HomematicipGenericEntity, EventEntity):
     async def async_added_to_hass(self) -> None:
         """Register callbacks."""
         await super().async_added_to_hass()
-        self.functional_channel.add_on_channel_event_handler(self._async_handle_event)
+
+        channel = self.get_channel_or_raise()
+        channel.add_on_channel_event_handler(self._async_handle_event)
 
     @callback
     def _async_handle_event(self, *args, **kwargs) -> None:
diff --git a/homeassistant/components/homematicip_cloud/light.py b/homeassistant/components/homematicip_cloud/light.py
index 1e602cd09c2..e8b0681d059 100644
--- a/homeassistant/components/homematicip_cloud/light.py
+++ b/homeassistant/components/homematicip_cloud/light.py
@@ -134,49 +134,49 @@ class HomematicipLightHS(HomematicipGenericEntity, LightEntity):
     @property
     def is_on(self) -> bool:
         """Return true if light is on."""
-        return self.functional_channel.on
+        channel = self.get_channel_or_raise()
+        return channel.on
 
     @property
     def brightness(self) -> int | None:
         """Return the current brightness."""
-        return int(self.functional_channel.dimLevel * 255.0)
+        channel = self.get_channel_or_raise()
+        return int(channel.dimLevel * 255.0)
 
     @property
     def hs_color(self) -> tuple[float, float] | None:
         """Return the hue and saturation color value [float, float]."""
-        if (
-            self.functional_channel.hue is None
-            or self.functional_channel.saturationLevel is None
-        ):
+        channel = self.get_channel_or_raise()
+        if channel.hue is None or channel.saturationLevel is None:
             return None
         return (
-            self.functional_channel.hue,
-            self.functional_channel.saturationLevel * 100.0,
+            channel.hue,
+            channel.saturationLevel * 100.0,
         )
 
     async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the light on."""
-
+        channel = self.get_channel_or_raise()
         hs_color = kwargs.get(ATTR_HS_COLOR, (0.0, 0.0))
         hue = hs_color[0] % 360.0
         saturation = hs_color[1] / 100.0
         dim_level = round(kwargs.get(ATTR_BRIGHTNESS, 255) / 255.0, 2)
 
         if ATTR_HS_COLOR not in kwargs:
-            hue = self.functional_channel.hue
-            saturation = self.functional_channel.saturationLevel
+            hue = channel.hue
+            saturation = channel.saturationLevel
 
         if ATTR_BRIGHTNESS not in kwargs:
             # If no brightness is set, use the current brightness
-            dim_level = self.functional_channel.dimLevel or 1.0
-
-        await self.functional_channel.set_hue_saturation_dim_level_async(
+            dim_level = channel.dimLevel or 1.0
+        await channel.set_hue_saturation_dim_level_async(
             hue=hue, saturation_level=saturation, dim_level=dim_level
         )
 
     async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the light off."""
-        await self.functional_channel.set_switch_state_async(on=False)
+        channel = self.get_channel_or_raise()
+        await channel.set_switch_state_async(on=False)
 
 
 class HomematicipLightMeasuring(HomematicipLight):
diff --git a/homeassistant/components/homematicip_cloud/sensor.py b/homeassistant/components/homematicip_cloud/sensor.py
index 588e67bac95..57195afbdc6 100644
--- a/homeassistant/components/homematicip_cloud/sensor.py
+++ b/homeassistant/components/homematicip_cloud/sensor.py
@@ -307,7 +307,8 @@ class HomematicipWaterFlowSensor(HomematicipGenericEntity, SensorEntity):
     @property
     def native_value(self) -> float | None:
         """Return the state."""
-        return self.functional_channel.waterFlow
+        channel = self.get_channel_or_raise()
+        return channel.waterFlow
 
 
 class HomematicipWaterVolumeSensor(HomematicipGenericEntity, SensorEntity):
diff --git a/homeassistant/components/homematicip_cloud/switch.py b/homeassistant/components/homematicip_cloud/switch.py
index 5da2989f93f..8f01c65589c 100644
--- a/homeassistant/components/homematicip_cloud/switch.py
+++ b/homeassistant/components/homematicip_cloud/switch.py
@@ -113,15 +113,18 @@ class HomematicipMultiSwitch(HomematicipGenericEntity, SwitchEntity):
     @property
     def is_on(self) -> bool:
         """Return true if switch is on."""
-        return self.functional_channel.on
+        channel = self.get_channel_or_raise()
+        return channel.on
 
     async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the switch on."""
-        await self.functional_channel.async_turn_on()
+        channel = self.get_channel_or_raise()
+        await channel.async_turn_on()
 
     async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the switch off."""
-        await self.functional_channel.async_turn_off()
+        channel = self.get_channel_or_raise()
+        await channel.async_turn_off()
 
 
 class HomematicipSwitch(HomematicipMultiSwitch, SwitchEntity):
diff --git a/homeassistant/components/homematicip_cloud/valve.py b/homeassistant/components/homematicip_cloud/valve.py
index aaeaa3c565c..a97ec157d17 100644
--- a/homeassistant/components/homematicip_cloud/valve.py
+++ b/homeassistant/components/homematicip_cloud/valve.py
@@ -47,13 +47,16 @@ class HomematicipWateringValve(HomematicipGenericEntity, ValveEntity):
 
     async def async_open_valve(self) -> None:
         """Open the valve."""
-        await self.functional_channel.set_watering_switch_state_async(True)
+        channel = self.get_channel_or_raise()
+        await channel.set_watering_switch_state_async(True)
 
     async def async_close_valve(self) -> None:
         """Close valve."""
-        await self.functional_channel.set_watering_switch_state_async(False)
+        channel = self.get_channel_or_raise()
+        await channel.set_watering_switch_state_async(False)
 
     @property
     def is_closed(self) -> bool:
         """Return if the valve is closed."""
-        return self.functional_channel.wateringActive is False
+        channel = self.get_channel_or_raise()
+        return channel.wateringActive is False
diff --git a/tests/components/homematicip_cloud/helper.py b/tests/components/homematicip_cloud/helper.py
index ab5e61c19fa..d5083290bbd 100644
--- a/tests/components/homematicip_cloud/helper.py
+++ b/tests/components/homematicip_cloud/helper.py
@@ -63,12 +63,25 @@ async def async_manipulate_test_data(
     new_value: Any,
     channel: int = 1,
     fire_device: HomeMaticIPObject | None = None,
+    channel_real_index: int | None = None,
 ):
     """Set new value on hmip device."""
     if channel == 1:
         setattr(hmip_device, attribute, new_value)
-    if hasattr(hmip_device, "functionalChannels"):
-        functional_channel = hmip_device.functionalChannels[channel]
+
+    channels = getattr(hmip_device, "functionalChannels", None)
+    if channels:
+        if channel_real_index is not None:
+            functional_channel = next(
+                (ch for ch in channels if ch.index == channel_real_index),
+                None,
+            )
+            assert functional_channel is not None, (
+                f"No functional channel with index {channel_real_index} found in hmip_device.functionalChannels"
+            )
+        else:
+            functional_channel = channels[channel]
+
         setattr(functional_channel, attribute, new_value)
 
     fire_target = hmip_device if fire_device is None else fire_device
diff --git a/tests/components/homematicip_cloud/test_binary_sensor.py b/tests/components/homematicip_cloud/test_binary_sensor.py
index 90af26bee55..1f58a7f7f40 100644
--- a/tests/components/homematicip_cloud/test_binary_sensor.py
+++ b/tests/components/homematicip_cloud/test_binary_sensor.py
@@ -565,8 +565,8 @@ async def test_hmip_multi_contact_interface(
     hass: HomeAssistant, default_mock_hap_factory: HomeFactory
 ) -> None:
     """Test HomematicipMultiContactInterface."""
-    entity_id = "binary_sensor.wired_eingangsmodul_32_fach_channel5"
-    entity_name = "Wired Eingangsmodul – 32-fach Channel5"
+    entity_id = "binary_sensor.wired_eingangsmodul_32_fach_channel10"
+    entity_name = "Wired Eingangsmodul – 32-fach Channel10"
     device_model = "HmIPW-DRI32"
     mock_hap = await default_mock_hap_factory.async_get_mock_hap(
         test_devices=["Wired Eingangsmodul – 32-fach", "Licht Flur"]
@@ -578,15 +578,25 @@ async def test_hmip_multi_contact_interface(
 
     assert ha_state.state == STATE_OFF
     await async_manipulate_test_data(
-        hass, hmip_device, "windowState", WindowState.OPEN, channel=5
+        hass, hmip_device, "windowState", WindowState.OPEN, channel_real_index=10
     )
     ha_state = hass.states.get(entity_id)
     assert ha_state.state == STATE_ON
 
-    await async_manipulate_test_data(hass, hmip_device, "windowState", None, channel=5)
+    await async_manipulate_test_data(
+        hass, hmip_device, "windowState", None, channel_real_index=10
+    )
     ha_state = hass.states.get(entity_id)
     assert ha_state.state == STATE_UNKNOWN
 
+    # Test channel 32 of device
+    entity_id = "binary_sensor.wired_eingangsmodul_32_fach_channel32"
+    entity_name = "Wired Eingangsmodul – 32-fach Channel32"
+    ha_state, hmip_device = get_and_check_entity_basics(
+        hass, mock_hap, entity_id, entity_name, device_model
+    )
+    assert ha_state.state == STATE_OFF
+
     ha_state, hmip_device = get_and_check_entity_basics(
         hass,
         mock_hap,