diff --git a/homeassistant/components/onewire/const.py b/homeassistant/components/onewire/const.py
index b908d49f975..285b2c51be5 100644
--- a/homeassistant/components/onewire/const.py
+++ b/homeassistant/components/onewire/const.py
@@ -28,6 +28,7 @@ DEVICE_SUPPORT_OWSERVER = {
     "26": (),
     "28": (),
     "29": (),
+    "30": (),
     "3A": (),
     "3B": (),
     "42": (),
diff --git a/homeassistant/components/onewire/sensor.py b/homeassistant/components/onewire/sensor.py
index 758752b4183..cac3630d473 100644
--- a/homeassistant/components/onewire/sensor.py
+++ b/homeassistant/components/onewire/sensor.py
@@ -54,6 +54,8 @@ from .onewirehub import OneWireHub
 class OneWireSensorEntityDescription(OneWireEntityDescription, SensorEntityDescription):
     """Class describing OneWire sensor entities."""
 
+    override_key: str | None = None
+
 
 SIMPLE_TEMPERATURE_SENSOR_DESCRIPTION = OneWireSensorEntityDescription(
     key="temperature",
@@ -184,6 +186,37 @@ DEVICE_SENSORS: dict[str, tuple[OneWireSensorEntityDescription, ...]] = {
         ),
     ),
     "28": (SIMPLE_TEMPERATURE_SENSOR_DESCRIPTION,),
+    "30": (
+        SIMPLE_TEMPERATURE_SENSOR_DESCRIPTION,
+        OneWireSensorEntityDescription(
+            key="typeX/temperature",
+            device_class=SensorDeviceClass.TEMPERATURE,
+            entity_registry_enabled_default=False,
+            name="Thermocouple temperature",
+            native_unit_of_measurement=TEMP_CELSIUS,
+            read_mode=READ_MODE_FLOAT,
+            override_key="typeK/temperature",
+            state_class=SensorStateClass.MEASUREMENT,
+        ),
+        OneWireSensorEntityDescription(
+            key="volt",
+            device_class=SensorDeviceClass.VOLTAGE,
+            entity_registry_enabled_default=False,
+            name="Voltage",
+            native_unit_of_measurement=ELECTRIC_POTENTIAL_VOLT,
+            read_mode=READ_MODE_FLOAT,
+            state_class=SensorStateClass.MEASUREMENT,
+        ),
+        OneWireSensorEntityDescription(
+            key="vis",
+            device_class=SensorDeviceClass.VOLTAGE,
+            entity_registry_enabled_default=False,
+            name="vis",
+            native_unit_of_measurement=ELECTRIC_POTENTIAL_VOLT,
+            read_mode=READ_MODE_FLOAT,
+            state_class=SensorStateClass.MEASUREMENT,
+        ),
+    ),
     "3B": (SIMPLE_TEMPERATURE_SENSOR_DESCRIPTION,),
     "42": (SIMPLE_TEMPERATURE_SENSOR_DESCRIPTION,),
     "1D": tuple(
@@ -368,7 +401,8 @@ def get_entities(
                         description.native_unit_of_measurement = PERCENTAGE
                         description.name = f"Wetness {s_id}"
                 device_file = os.path.join(
-                    os.path.split(device.path)[0], description.key
+                    os.path.split(device.path)[0],
+                    description.override_key or description.key,
                 )
                 name = f"{device_id} {description.name}"
                 entities.append(
diff --git a/tests/components/onewire/const.py b/tests/components/onewire/const.py
index e255e234f54..8d3a8270752 100644
--- a/tests/components/onewire/const.py
+++ b/tests/components/onewire/const.py
@@ -618,6 +618,59 @@ MOCK_OWPROXY_DEVICES = {
             },
         ],
     },
+    "30.111111111111": {
+        ATTR_INJECT_READS: [
+            b"DS2760",  # read device type
+        ],
+        ATTR_DEVICE_INFO: {
+            ATTR_IDENTIFIERS: {(DOMAIN, "30.111111111111")},
+            ATTR_MANUFACTURER: MANUFACTURER_MAXIM,
+            ATTR_MODEL: "DS2760",
+            ATTR_NAME: "30.111111111111",
+        },
+        Platform.SENSOR: [
+            {
+                ATTR_DEVICE_CLASS: SensorDeviceClass.TEMPERATURE,
+                ATTR_ENTITY_ID: "sensor.30_111111111111_temperature",
+                ATTR_INJECT_READS: b"    26.984",
+                ATTR_STATE: "27.0",
+                ATTR_STATE_CLASS: SensorStateClass.MEASUREMENT,
+                ATTR_UNIQUE_ID: "/30.111111111111/temperature",
+                ATTR_UNIT_OF_MEASUREMENT: TEMP_CELSIUS,
+            },
+            {
+                ATTR_DEFAULT_DISABLED: True,
+                ATTR_DEVICE_CLASS: SensorDeviceClass.TEMPERATURE,
+                ATTR_DEVICE_FILE: "/30.111111111111/typeK/temperature",
+                ATTR_ENTITY_ID: "sensor.30_111111111111_thermocouple_temperature",
+                ATTR_INJECT_READS: b"    173.7563",
+                ATTR_STATE: "173.8",
+                ATTR_STATE_CLASS: SensorStateClass.MEASUREMENT,
+                ATTR_UNIQUE_ID: "/30.111111111111/typeX/temperature",
+                ATTR_UNIT_OF_MEASUREMENT: TEMP_CELSIUS,
+            },
+            {
+                ATTR_DEFAULT_DISABLED: True,
+                ATTR_DEVICE_CLASS: SensorDeviceClass.VOLTAGE,
+                ATTR_ENTITY_ID: "sensor.30_111111111111_voltage",
+                ATTR_INJECT_READS: b"     2.97",
+                ATTR_STATE: "3.0",
+                ATTR_STATE_CLASS: SensorStateClass.MEASUREMENT,
+                ATTR_UNIQUE_ID: "/30.111111111111/volt",
+                ATTR_UNIT_OF_MEASUREMENT: ELECTRIC_POTENTIAL_VOLT,
+            },
+            {
+                ATTR_DEFAULT_DISABLED: True,
+                ATTR_DEVICE_CLASS: SensorDeviceClass.VOLTAGE,
+                ATTR_ENTITY_ID: "sensor.30_111111111111_vis",
+                ATTR_INJECT_READS: b"    0.12",
+                ATTR_STATE: "0.1",
+                ATTR_STATE_CLASS: SensorStateClass.MEASUREMENT,
+                ATTR_UNIQUE_ID: "/30.111111111111/vis",
+                ATTR_UNIT_OF_MEASUREMENT: ELECTRIC_POTENTIAL_VOLT,
+            },
+        ],
+    },
     "3A.111111111111": {
         ATTR_INJECT_READS: [
             b"DS2413",  # read device type