diff --git a/devices/tst.properties b/devices/tst.properties
new file mode 100644
index 00000000..753bb1a6
--- /dev/null
+++ b/devices/tst.properties
@@ -0,0 +1,5 @@
+#Tue Mar 27 15:00:08 CEST 2018
+offset=0.0
+precision=0
+scale=1.0
+unit=A