From a74f035ae7f16ae62d5d757f7b825ee174b039a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zolt=C3=A1n=20T=C3=B3th?=
 <42900504+toth2zoltan@users.noreply.github.com>
Date: Mon, 2 May 2022 16:42:23 +0200
Subject: [PATCH] Fix SAJ Solar inverter RecursionError (#71157)

---
 homeassistant/components/saj/sensor.py | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/homeassistant/components/saj/sensor.py b/homeassistant/components/saj/sensor.py
index 2fb3729d0a8..818ce7ea57a 100644
--- a/homeassistant/components/saj/sensor.py
+++ b/homeassistant/components/saj/sensor.py
@@ -209,14 +209,11 @@ class SAJsensor(SensorEntity):
     @property
     def device_class(self):
         """Return the device class the sensor belongs to."""
-        if self.unit_of_measurement == POWER_WATT:
+        if self.native_unit_of_measurement == POWER_WATT:
             return SensorDeviceClass.POWER
-        if self.unit_of_measurement == ENERGY_KILO_WATT_HOUR:
+        if self.native_unit_of_measurement == ENERGY_KILO_WATT_HOUR:
             return SensorDeviceClass.ENERGY
-        if (
-            self.unit_of_measurement == TEMP_CELSIUS
-            or self._sensor.unit == TEMP_FAHRENHEIT
-        ):
+        if self.native_unit_of_measurement in (TEMP_CELSIUS, TEMP_FAHRENHEIT):
             return SensorDeviceClass.TEMPERATURE
 
     @property