diff --git a/custom_components/owlet/binary_sensor.py b/custom_components/owlet/binary_sensor.py
index 5377520..7854b66 100644
--- a/custom_components/owlet/binary_sensor.py
+++ b/custom_components/owlet/binary_sensor.py
@@ -42,7 +42,6 @@ SENSORS: tuple[OwletBinarySensorEntityDescription, ...] = (
         key="high_oxygen_alert",
         translation_key="high_ox_alrt",
         device_class=BinarySensorDeviceClass.SOUND,
-        entity_registry_enabled_default=False,
     ),
     OwletBinarySensorEntityDescription(
         key="low_oxygen_alert",
@@ -111,12 +110,9 @@ class OwletBinarySensor(OwletBaseEntity, BinarySensorEntity):
         """Return true if the binary sensor is on."""
         state = self.sock.properties[self.entity_description.key]
 
-        entity = self.entity_description.key
-
-        if self.sock.properties["charging"] and entity in ["sleep_state"]:
-            return None
-
-        if entity == "sleep_state":
+        if self.entity_description.key == "sleep_state":
+            if self.sock.properties["charging"]:
+                return None
             if state in [8, 15]:
                 state = False
             else:
diff --git a/custom_components/owlet/entity.py b/custom_components/owlet/entity.py
index 2c3356c..714e633 100644
--- a/custom_components/owlet/entity.py
+++ b/custom_components/owlet/entity.py
@@ -30,5 +30,5 @@ class OwletBaseEntity(CoordinatorEntity[OwletCoordinator], Entity):
             manufacturer=MANUFACTURER,
             model=self.sock.model,
             sw_version=self.sock.sw_version,
-            hw_version=self.sock.version,
+            hw_version=f"{self.sock.version}r{self.sock.revision}",
         )
diff --git a/custom_components/owlet/manifest.json b/custom_components/owlet/manifest.json
index af73e88..3969988 100644
--- a/custom_components/owlet/manifest.json
+++ b/custom_components/owlet/manifest.json
@@ -1,11 +1,15 @@
 {
   "domain": "owlet",
   "name": "Owlet Smart Sock",
-  "codeowners": ["@ryanbdclark"],
+  "codeowners": [
+    "@ryanbdclark"
+  ],
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/owlet",
   "iot_class": "cloud_polling",
   "issue_tracker": "https://github.com/ryanbdclark/owlet/issues",
-  "requirements": ["pyowletapi==2023.7.2"],
-  "version":"2023.8.1"
-}
+  "requirements": [
+    "pyowletapi==2023.9.1"
+  ],
+  "version": "2023.9.1"
+}
\ No newline at end of file
diff --git a/custom_components/owlet/sensor.py b/custom_components/owlet/sensor.py
index 6e2cf8a..b091dc3 100644
--- a/custom_components/owlet/sensor.py
+++ b/custom_components/owlet/sensor.py
@@ -30,7 +30,7 @@ class OwletSensorEntityDescription(SensorEntityDescription):
     """Represent the owlet sensor entity description."""
 
 
-SENSORS: tuple[OwletSensorEntityDescription, ...] = (
+SENSORS_ALL: tuple[OwletSensorEntityDescription, ...] = (
     OwletSensorEntityDescription(
         key="battery_percentage",
         translation_key="batterypercent",
@@ -45,13 +45,6 @@ SENSORS: tuple[OwletSensorEntityDescription, ...] = (
         state_class=SensorStateClass.MEASUREMENT,
         icon="mdi:leaf",
     ),
-    OwletSensorEntityDescription(
-        key="oxygen_10_av",
-        translation_key="o2saturation10a",
-        native_unit_of_measurement=PERCENTAGE,
-        state_class=SensorStateClass.MEASUREMENT,
-        icon="mdi:leaf",
-    ),
     OwletSensorEntityDescription(
         key="heart_rate",
         translation_key="heartrate",
@@ -92,6 +85,16 @@ SENSORS: tuple[OwletSensorEntityDescription, ...] = (
         icon="mdi:cursor-move",
         entity_registry_enabled_default=False,
     ),
+)
+
+SENSORS_OLD: tuple[OwletSensorEntityDescription, ...] = (
+    OwletSensorEntityDescription(
+        key="oxygen_10_av",
+        translation_key="o2saturation10a",
+        native_unit_of_measurement=PERCENTAGE,
+        state_class=SensorStateClass.MEASUREMENT,
+        icon="mdi:leaf",
+    ),
     OwletSensorEntityDescription(
         key="movement_bucket",
         translation_key="movementbucket",
@@ -113,11 +116,17 @@ async def async_setup_entry(
         hass.data[DOMAIN][config_entry.entry_id].values()
     )
 
-    async_add_entities(
-        OwletSensor(coordinator, sensor)
-        for coordinator in coordinators
-        for sensor in SENSORS
-    )
+    sensors = []
+
+    sensor_list = SENSORS_ALL
+    for coordinator in coordinators:
+        if coordinator.sock.revision < 5:
+            sensor_list += SENSORS_OLD
+
+        for sensor in sensor_list:
+            sensors.append(OwletSensor(coordinator, sensor))
+
+    async_add_entities(sensors)
 
 
 class OwletSensor(OwletBaseEntity, SensorEntity):