diff --git a/pyad2usb/panels.py b/pyad2usb/panels.py
new file mode 100644
index 0000000..33d220f
--- /dev/null
+++ b/pyad2usb/panels.py
@@ -0,0 +1,13 @@
+"""
+Representations of Panels and their templates.
+"""
+
+VISTA20 = 0
+
+TEMPLATES = {
+    VISTA20: {
+        'name': 'Vista 20',
+        # number of expanders, starting_address, number of channels
+        'expanders': (5, 7, 7)
+    }
+}