diff --git a/RaspberryPi&JetsonNano/python/examples/epd_2in7_test.py b/RaspberryPi&JetsonNano/python/examples/epd_2in7_test.py
index b0ba1bd..a629804 100644
--- a/RaspberryPi&JetsonNano/python/examples/epd_2in7_test.py
+++ b/RaspberryPi&JetsonNano/python/examples/epd_2in7_test.py
@@ -106,6 +106,7 @@ try:
     
     logging.info("Goto Sleep...")
     epd.sleep()
+    tiem.sleep(2)
     
 except IOError as e:
     logging.info(e)