diff --git a/README.md b/README.md
index c32189b0912db2662a52d477055adc5edc0fe395..1972124cb1849074bff9a48b8ccf6978586792e6 100644
--- a/README.md
+++ b/README.md
@@ -7,4 +7,8 @@
 - `collect-geomar-data` collect external data from geomar weather station
   (unfinished)
 
+# sensor-relay-service
+
+This tool relys on https://github.com/padelt/pcsensor-temper
+