diff --git a/test/towerops/snmp/profiles/vendors/routeros_test.exs b/test/towerops/snmp/profiles/vendors/routeros_test.exs
index b071ad3d..b6158ffa 100644
--- a/test/towerops/snmp/profiles/vendors/routeros_test.exs
+++ b/test/towerops/snmp/profiles/vendors/routeros_test.exs
@@ -343,5 +343,48 @@ defmodule Towerops.Snmp.Profiles.Vendors.RouterosTest do
       assert voltage_sensor.sensor_divisor == 10
       assert voltage_sensor.last_value == 12.0
     end
+
+    test "overrides sensor type when device reports wrong unit type" do
+      expect(SnmpMock, :walk, fn _, @wl_ap_table, _ -> {:ok, []} end)
+      expect(SnmpMock, :walk, fn _, @wl_stat_table, _ -> {:ok, []} end)
+      expect(SnmpMock, :walk, fn _, @wl_60g_table, _ -> {:ok, []} end)
+      expect(SnmpMock, :walk, fn _, @lte_modem_table, _ -> {:ok, []} end)
+
+      # Device incorrectly reports unit type 1 (celsius/temperature) for voltage sensor
+      # This is the real-world bug case: sensor named "psu2-voltage" with unit type 1
+      expect(SnmpMock, :walk, fn _, @gauge_table, _ ->
+        {:ok,
+         [
+           # PSU voltage sensor incorrectly reported as temperature (unit type 1)
+           %{oid: "#{@gauge_table}.2.7201", value: "psu1-voltage"},
+           %{oid: "#{@gauge_table}.3.7201", value: 469},
+           %{oid: "#{@gauge_table}.4.7201", value: 1},
+           # Another voltage sensor with wrong unit type
+           %{oid: "#{@gauge_table}.2.7202", value: "psu2-voltage"},
+           %{oid: "#{@gauge_table}.3.7202", value: 469},
+           %{oid: "#{@gauge_table}.4.7202", value: 1}
+         ]}
+      end)
+
+      expect(SnmpMock, :walk, fn _, @optical_table, _ -> {:ok, []} end)
+      expect(SnmpMock, :get, 2, fn _, _oid, _ -> {:error, :timeout} end)
+
+      sensors = Routeros.discover_wireless_sensors(@client_opts)
+
+      # Verify both sensors are correctly overridden to voltage with divisor 10
+      psu1_sensor = Enum.find(sensors, &(&1.sensor_descr == "psu1-voltage"))
+      assert psu1_sensor
+      assert psu1_sensor.sensor_type == "voltage"
+      assert psu1_sensor.sensor_unit == "V"
+      assert psu1_sensor.sensor_divisor == 10
+      assert psu1_sensor.last_value == 46.9
+
+      psu2_sensor = Enum.find(sensors, &(&1.sensor_descr == "psu2-voltage"))
+      assert psu2_sensor
+      assert psu2_sensor.sensor_type == "voltage"
+      assert psu2_sensor.sensor_unit == "V"
+      assert psu2_sensor.sensor_divisor == 10
+      assert psu2_sensor.last_value == 46.9
+    end
   end
 end