diff --git a/script/local.py b/script/local.py
new file mode 100644
index 0000000..3fd9ad4
--- /dev/null
+++ b/script/local.py
@@ -0,0 +1,32 @@
+#det.data.monitored=True
+import random
+
+
+class SimulatedOutput(Writable):
+    def getName(self):
+        return "SimulatedOutput"
+
+    def write(self, value):
+        pass
+
+
+class SimulatedInput(Readable):
+    def __init__(self):
+        self.x = 0.0
+
+    def getName(self):
+        return "SimulatedInput"
+
+    def read(self):
+        self.x = self.x + 0.2
+        noise = (random.random() - 0.5) / 20.0
+        return math.sin(self.x)  + noise
+
+
+sout = SimulatedOutput()
+sinp = SimulatedInput()
+
+
+positioner1 = create_channel_device('TESTIOC:TESTCALCOUT:Input', type = 'd')
+detector1 = create_channel_device('TESTIOC:TESTCALCOUT:Output', type = 'd')
+detector2 = create_channel_device('TESTIOC:TESTSINUS:SinCalc', type = 'd')
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