diff --git a/homeassistant/components/totalconnect/binary_sensor.py b/homeassistant/components/totalconnect/binary_sensor.py
index ef252d54e4e..9caa642b5f4 100644
--- a/homeassistant/components/totalconnect/binary_sensor.py
+++ b/homeassistant/components/totalconnect/binary_sensor.py
@@ -81,15 +81,9 @@ class TotalConnectZoneSecurityBinarySensor(TotalConnectZoneBinarySensor):
             return BinarySensorDeviceClass.MOTION
         if self._zone.is_type_medical():
             return BinarySensorDeviceClass.SAFETY
-        # "security" type is a generic category so test for it last
-        if self._zone.is_type_security():
-            return BinarySensorDeviceClass.DOOR
-
-        _LOGGER.error(
-            "TotalConnect zone %s reported an unexpected device class",
-            self._zone.zoneid,
-        )
-        return None
+        if self._zone.is_type_temperature():
+            return BinarySensorDeviceClass.PROBLEM
+        return BinarySensorDeviceClass.DOOR
 
     def update(self):
         """Return the state of the device."""
diff --git a/tests/components/totalconnect/common.py b/tests/components/totalconnect/common.py
index 54f321c6770..ccee4c43781 100644
--- a/tests/components/totalconnect/common.py
+++ b/tests/components/totalconnect/common.py
@@ -189,14 +189,23 @@ ZONE_5 = {
 # 99 is an unknown ZoneType
 ZONE_6 = {
     "ZoneID": "6",
-    "ZoneDescription": "Medical",
+    "ZoneDescription": "Unknown",
     "ZoneStatus": ZoneStatus.NORMAL,
     "ZoneTypeId": 99,
     "PartitionId": "1",
     "CanBeBypassed": 0,
 }
 
-ZONE_INFO = [ZONE_NORMAL, ZONE_2, ZONE_3, ZONE_4, ZONE_5, ZONE_6]
+ZONE_7 = {
+    "ZoneID": 7,
+    "ZoneDescription": "Temperature",
+    "ZoneStatus": ZoneStatus.NORMAL,
+    "ZoneTypeId": ZoneType.MONITOR,
+    "PartitionId": "1",
+    "CanBeBypassed": 0,
+}
+
+ZONE_INFO = [ZONE_NORMAL, ZONE_2, ZONE_3, ZONE_4, ZONE_5, ZONE_6, ZONE_7]
 ZONES = {"ZoneInfo": ZONE_INFO}
 
 METADATA_DISARMED = {
diff --git a/tests/components/totalconnect/test_binary_sensor.py b/tests/components/totalconnect/test_binary_sensor.py
index 966daeb5a63..8f9cabe670c 100644
--- a/tests/components/totalconnect/test_binary_sensor.py
+++ b/tests/components/totalconnect/test_binary_sensor.py
@@ -84,3 +84,21 @@ async def test_state_and_attributes(hass: HomeAssistant) -> None:
         assert state.state == STATE_OFF
         state = hass.states.get("binary_sensor.gas_tamper")
         assert state.state == STATE_ON
+
+        # Zone 6 is unknown type, assume it is a security (door) sensor
+        state = hass.states.get("binary_sensor.unknown")
+        assert state.state == STATE_OFF
+        assert state.attributes.get("device_class") == BinarySensorDeviceClass.DOOR
+        state = hass.states.get("binary_sensor.unknown_low_battery")
+        assert state.state == STATE_OFF
+        state = hass.states.get("binary_sensor.unknown_tamper")
+        assert state.state == STATE_OFF
+
+        # Zone 7 is temperature
+        state = hass.states.get("binary_sensor.temperature")
+        assert state.state == STATE_OFF
+        assert state.attributes.get("device_class") == BinarySensorDeviceClass.PROBLEM
+        state = hass.states.get("binary_sensor.temperature_low_battery")
+        assert state.state == STATE_OFF
+        state = hass.states.get("binary_sensor.temperature_tamper")
+        assert state.state == STATE_OFF