diff --git a/app.py b/app.py
index da2c4b7..fe7521a 100644
--- a/app.py
+++ b/app.py
@@ -94,6 +94,9 @@ def serve_layout() -> html.Div:
                html.P('The real-time Ribbit Network observations displayed here, and available for download as comma-separated value (CSV) files, are raw data values that have not yet undergone any quality control. See further information in the FAQ.',
             style={'width':'100%', 'text-align':'center', 'color': '#AAAAAA', 'font-size': '11px'}),
            ], id='infoText'),
+        html.Div([
+            html.P('Sensor ID: '),
+        ],
         html.Div([
             html.Div(id='timeseries'),
             html.Div(id='timezone', hidden=True),