diff --git a/devices/img.properties b/devices/img.properties
index 35acc1c..f667c7e 100644
--- a/devices/img.properties
+++ b/devices/img.properties
@@ -1,8 +1,8 @@
-#Thu Nov 24 14:10:36 CET 2016
+#Fri Jan 06 10:36:17 CET 2017
 colormap=Grayscale
 colormapAutomatic=false
-colormapMax=NaN
-colormapMin=NaN
+colormapMax=18.133
+colormapMin=6.4
 flipHorizontally=false
 flipVertically=false
 grayscale=false
diff --git a/script/TestRelays b/script/TestRelays
new file mode 100644
index 0000000..7a2451b
--- /dev/null
+++ b/script/TestRelays
@@ -0,0 +1,5 @@
+for i in range(20):
+    relay1.write(True)
+    time.sleep(0.2)
+    relay1.write(False)
+    time.sleep(0.2)