diff --git a/homeassistant/components/poolsense/sensor.py b/homeassistant/components/poolsense/sensor.py
index ed120562374..c61196d9931 100644
--- a/homeassistant/components/poolsense/sensor.py
+++ b/homeassistant/components/poolsense/sensor.py
@@ -29,8 +29,8 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
     ),
     SensorEntityDescription(
         key="pH",
-        translation_key="ph",
         icon="mdi:pool",
+        device_class=SensorDeviceClass.PH,
     ),
     SensorEntityDescription(
         key="Battery",
diff --git a/homeassistant/components/poolsense/strings.json b/homeassistant/components/poolsense/strings.json
index 9ec67e223a1..02f186994e2 100644
--- a/homeassistant/components/poolsense/strings.json
+++ b/homeassistant/components/poolsense/strings.json
@@ -28,9 +28,6 @@
       "chlorine": {
         "name": "Chlorine"
       },
-      "ph": {
-        "name": "pH"
-      },
       "last_seen": {
         "name": "Last seen"
       },