diff --git a/src/sensors_polling_timer.py b/src/sensors_polling_timer.py
index f0d872c..cfbf260 100644
--- a/src/sensors_polling_timer.py
+++ b/src/sensors_polling_timer.py
@@ -39,5 +39,6 @@ class SensorsPollingTimer(Timer):
 			value = self.proxy.Get('(ss)', 'net.hadess.SensorProxy', 'LightLevel')
 			if (self.oldValue != value):
 				self.oldValue = value
-				self.function(value)    # Invoke callback
+				unit = self.proxy.Get('(ss)', 'net.hadess.SensorProxy', 'LightLevelUnit')
+				self.function(value, unit)    # Invoke callback
 
diff --git a/src/window.py b/src/window.py
index 7d3577b..9ae01fe 100644
--- a/src/window.py
+++ b/src/window.py
@@ -25,15 +25,20 @@ from .sensors_polling_timer import SensorsPollingTimer
 class LumosWindow(Adw.ApplicationWindow):
     __gtype_name__ = 'LumosWindow'
 
-    #label = Gtk.Template.Child()
+    lux_label = Gtk.Template.Child()
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
 
         # Start polling sensors
-        self.sensorsPollingTimer = SensorsPollingTimer(1, self.onSensorRead)
-        self.sensorsPollingTimer.run()
+        self.sensorsPollingTimer = SensorsPollingTimer(0.1, self.onSensorRead)
+        self.sensorsPollingTimer.start()
 
-    def onSensorRead(self, value):
+    def onSensorRead(self, value, unit):
         # Called when the light value changed
-	    print("Read {} lux".format(value))
+	    print("Read {} {}".format(value, unit))
+
+	    if self.lux_label:
+	        self.lux_label.set_label("{:.0f} {}".format(value, unit))
+
+
diff --git a/src/window.ui b/src/window.ui
index fa719a4..eca74a4 100644
--- a/src/window.ui
+++ b/src/window.ui
@@ -89,7 +89,7 @@
                           </object>
                         </child>
                         <child>
-                          <object class="GtkLabel" id="lux-label">
+                          <object class="GtkLabel" id="lux_label">
                             <property name="label" translatable="no">XXX Lux</property>
                             <style>
                               <class name="title-1"/>