diff --git a/Demo_LED_Indicators.py b/Demo_LED_Indicators.py
index 06961874..be9417dd 100644
--- a/Demo_LED_Indicators.py
+++ b/Demo_LED_Indicators.py
@@ -1,54 +1,51 @@
-#!/usr/bin/env python
-import sys
-
-if sys.version_info[0] >= 3:
-    import PySimpleGUI as sg
-else:
-    import PySimpleGUI27 as sg
-import time
-import random
-
-"""
-    Demo program showing how to create your own "LED Indicators"
-    The LEDIndicator function acts like a new Element that is directly placed in a window's layout
-    After the Window is created, use the SetLED function to access the LED and set the color
-
-"""
-
-
-def LEDIndicator(key=None, radius=30):
-    return sg.Graph(canvas_size=(radius, radius),
-             graph_bottom_left=(-radius, -radius),
-             graph_top_right=(radius, radius),
-             pad=(0, 0), key=key)
-
-def SetLED(window, key, color):
-    graph = window.FindElement(key)
-    graph.Erase()
-    graph.DrawCircle((0, 0), 12, fill_color=color, line_color=color)
-
-
-layout = [[sg.Text('My LED Status Indicators', size=(20,1))],
-          [sg.Text('CPU Use'), LEDIndicator('_cpu_')],
-          [sg.Text('RAM'), LEDIndicator('_ram_')],
-          [sg.Text('Temperature'), LEDIndicator('_temp_')],
-          [sg.Text('Server 1'), LEDIndicator('_server1_')],
-          [sg.RButton('Exit')]]
-
-window = sg.Window('My new window', default_element_size=(12, 1), auto_size_text=False).Layout(layout).Finalize()
-
-i = 0
-while True:  # Event Loop
-    event, value = window.ReadNonBlocking()
-    if event == 'Exit':
-        window.CloseNonBlocking()
-        break
-    if value is None:
-        break
-    i += 1
-    SetLED(window, '_cpu_', 'green' if random.randint(1, 10) > 5 else 'red')
-    SetLED(window, '_ram_', 'green' if random.randint(1, 10) > 5 else 'red')
-    SetLED(window, '_temp_', 'green' if random.randint(1, 10) > 5 else 'red')
-    SetLED(window, '_server1_', 'green' if random.randint(1, 10) > 5 else 'red')
-
-    time.sleep(.400)
+#!/usr/bin/env python
+import sys
+
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+import time
+import random
+
+"""
+    Demo program showing how to create your own "LED Indicators"
+    The LEDIndicator function acts like a new Element that is directly placed in a window's layout
+    After the Window is created, use the SetLED function to access the LED and set the color
+
+"""
+
+
+def LEDIndicator(key=None, radius=30):
+    return sg.Graph(canvas_size=(radius, radius),
+             graph_bottom_left=(-radius, -radius),
+             graph_top_right=(radius, radius),
+             pad=(0, 0), key=key)
+
+def SetLED(window, key, color):
+    graph = window.FindElement(key)
+    graph.Erase()
+    graph.DrawCircle((0, 0), 12, fill_color=color, line_color=color)
+
+
+layout = [[sg.Text('My LED Status Indicators', size=(20,1))],
+          [sg.Text('CPU Use'), LEDIndicator('_cpu_')],
+          [sg.Text('RAM'), LEDIndicator('_ram_')],
+          [sg.Text('Temperature'), LEDIndicator('_temp_')],
+          [sg.Text('Server 1'), LEDIndicator('_server1_')],
+          [sg.RButton('Exit')]]
+
+window = sg.Window('My new window', default_element_size=(12, 1), auto_size_text=False).Layout(layout).Finalize()
+
+i = 0
+while True:  # Event Loop
+    event, value = window.Read(timeout=400)
+    if event == 'Exit' or event is None:
+        break
+    if value is None:
+        break
+    i += 1
+    SetLED(window, '_cpu_', 'green' if random.randint(1, 10) > 5 else 'red')
+    SetLED(window, '_ram_', 'green' if random.randint(1, 10) > 5 else 'red')
+    SetLED(window, '_temp_', 'green' if random.randint(1, 10) > 5 else 'red')
+    SetLED(window, '_server1_', 'green' if random.randint(1, 10) > 5 else 'red')