diff --git a/homeassistant/components/knx/sensor.py b/homeassistant/components/knx/sensor.py
index ef153985342..ea5ba2f63a6 100644
--- a/homeassistant/components/knx/sensor.py
+++ b/homeassistant/components/knx/sensor.py
@@ -53,7 +53,6 @@ class KNXSystemEntityDescription(SensorEntityDescription):
 SYSTEM_ENTITY_DESCRIPTIONS = (
     KNXSystemEntityDescription(
         key="individual_address",
-        name="Individual Address",
         always_available=False,
         icon="mdi:router-network",
         should_poll=False,
@@ -61,7 +60,6 @@ SYSTEM_ENTITY_DESCRIPTIONS = (
     ),
     KNXSystemEntityDescription(
         key="connected_since",
-        name="Connected since",
         always_available=False,
         device_class=SensorDeviceClass.TIMESTAMP,
         should_poll=False,
@@ -69,7 +67,6 @@ SYSTEM_ENTITY_DESCRIPTIONS = (
     ),
     KNXSystemEntityDescription(
         key="connection_type",
-        name="Connection type",
         always_available=False,
         device_class=SensorDeviceClass.ENUM,
         options=[opt.value for opt in XknxConnectionType],
@@ -78,7 +75,6 @@ SYSTEM_ENTITY_DESCRIPTIONS = (
     ),
     KNXSystemEntityDescription(
         key="telegrams_incoming",
-        name="Telegrams incoming",
         icon="mdi:upload-network",
         entity_registry_enabled_default=False,
         force_update=True,
@@ -87,14 +83,12 @@ SYSTEM_ENTITY_DESCRIPTIONS = (
     ),
     KNXSystemEntityDescription(
         key="telegrams_incoming_error",
-        name="Telegrams incoming Error",
         icon="mdi:help-network",
         state_class=SensorStateClass.TOTAL_INCREASING,
         value_fn=lambda knx: knx.xknx.connection_manager.cemi_count_incoming_error,
     ),
     KNXSystemEntityDescription(
         key="telegrams_outgoing",
-        name="Telegrams outgoing",
         icon="mdi:download-network",
         entity_registry_enabled_default=False,
         force_update=True,
@@ -103,14 +97,12 @@ SYSTEM_ENTITY_DESCRIPTIONS = (
     ),
     KNXSystemEntityDescription(
         key="telegrams_outgoing_error",
-        name="Telegrams outgoing Error",
         icon="mdi:close-network",
         state_class=SensorStateClass.TOTAL_INCREASING,
         value_fn=lambda knx: knx.xknx.connection_manager.cemi_count_outgoing_error,
     ),
     KNXSystemEntityDescription(
         key="telegram_count",
-        name="Telegrams",
         icon="mdi:plus-network",
         force_update=True,
         state_class=SensorStateClass.TOTAL_INCREASING,
@@ -192,6 +184,8 @@ class KNXSensor(KnxEntity, SensorEntity):
 class KNXSystemSensor(SensorEntity):
     """Representation of a KNX system sensor."""
 
+    _attr_has_entity_name = True
+
     def __init__(
         self,
         knx: KNXModule,
@@ -203,6 +197,7 @@ class KNXSystemSensor(SensorEntity):
 
         self._attr_device_info = knx.interface_device.device_info
         self._attr_should_poll = description.should_poll
+        self._attr_translation_key = description.key
         self._attr_unique_id = f"_{knx.entry.entry_id}_{description.key}"
 
     @property
diff --git a/homeassistant/components/knx/strings.json b/homeassistant/components/knx/strings.json
index 800945ab6bd..0fce778c521 100644
--- a/homeassistant/components/knx/strings.json
+++ b/homeassistant/components/knx/strings.json
@@ -253,5 +253,33 @@
       "no_tunnel_discovered": "[%key:component::knx::config::error::no_tunnel_discovered%]",
       "unsupported_tunnel_type": "[%key:component::knx::config::error::unsupported_tunnel_type%]"
     }
+  },
+  "entity": {
+    "sensor": {
+      "individual_address": {
+        "name": "Individual address"
+      },
+      "connected_since": {
+        "name": "Connection established"
+      },
+      "connection_type": {
+        "name": "Connection type"
+      },
+      "telegrams_incoming": {
+        "name": "Incoming telegrams"
+      },
+      "telegrams_incoming_error": {
+        "name": "Incoming telegram errors"
+      },
+      "telegrams_outgoing": {
+        "name": "Outgoing telegrams"
+      },
+      "telegrams_outgoing_error": {
+        "name": "Outgoing telegram errors"
+      },
+      "telegram_count": {
+        "name": "Telegrams"
+      }
+    }
   }
 }
diff --git a/tests/components/knx/test_interface_device.py b/tests/components/knx/test_interface_device.py
index e45729559c1..6eab80d52cb 100644
--- a/tests/components/knx/test_interface_device.py
+++ b/tests/components/knx/test_interface_device.py
@@ -23,20 +23,20 @@ async def test_diagnostic_entities(
 
     for entity_id in [
         "sensor.knx_interface_individual_address",
-        "sensor.knx_interface_connected_since",
+        "sensor.knx_interface_connection_established",
         "sensor.knx_interface_connection_type",
-        "sensor.knx_interface_telegrams_incoming",
-        "sensor.knx_interface_telegrams_incoming_error",
-        "sensor.knx_interface_telegrams_outgoing",
-        "sensor.knx_interface_telegrams_outgoing_error",
+        "sensor.knx_interface_incoming_telegrams",
+        "sensor.knx_interface_incoming_telegram_errors",
+        "sensor.knx_interface_outgoing_telegrams",
+        "sensor.knx_interface_outgoing_telegram_errors",
         "sensor.knx_interface_telegrams",
     ]:
         entity = entity_registry.async_get(entity_id)
         assert entity.entity_category is EntityCategory.DIAGNOSTIC
 
     for entity_id in [
-        "sensor.knx_interface_telegrams_incoming",
-        "sensor.knx_interface_telegrams_outgoing",
+        "sensor.knx_interface_incoming_telegrams",
+        "sensor.knx_interface_outgoing_telegrams",
     ]:
         entity = entity_registry.async_get(entity_id)
         assert entity.disabled is True
@@ -57,8 +57,8 @@ async def test_diagnostic_entities(
         ("sensor.knx_interface_individual_address", "0.0.0"),
         ("sensor.knx_interface_connection_type", "Tunnel TCP"),
         # skipping connected_since timestamp
-        ("sensor.knx_interface_telegrams_incoming_error", "1"),
-        ("sensor.knx_interface_telegrams_outgoing_error", "2"),
+        ("sensor.knx_interface_incoming_telegram_errors", "1"),
+        ("sensor.knx_interface_outgoing_telegram_errors", "2"),
         ("sensor.knx_interface_telegrams", "31"),
     ]:
         assert hass.states.get(entity_id).state == test_state
@@ -88,8 +88,8 @@ async def test_diagnostic_entities(
         ("sensor.knx_interface_individual_address", "1.1.1"),
         ("sensor.knx_interface_connection_type", "Tunnel UDP"),
         # skipping connected_since timestamp
-        ("sensor.knx_interface_telegrams_incoming_error", "0"),
-        ("sensor.knx_interface_telegrams_outgoing_error", "0"),
+        ("sensor.knx_interface_incoming_telegram_errors", "0"),
+        ("sensor.knx_interface_outgoing_telegram_errors", "0"),
         ("sensor.knx_interface_telegrams", "0"),
     ]:
         assert hass.states.get(entity_id).state == test_state
@@ -105,7 +105,7 @@ async def test_removed_entity(
         knx.xknx.connection_manager, "unregister_connection_state_changed_cb"
     ) as unregister_mock:
         entity_registry.async_update_entity(
-            "sensor.knx_interface_connected_since",
+            "sensor.knx_interface_connection_established",
             disabled_by=er.RegistryEntryDisabler.USER,
         )
         await hass.async_block_till_done()